English words starting with B

involving or relating to two nations.

involving or relating to the use of both ears

To tie or fasten something tightly with string, rope, or a similar material.

A cover for holding loose sheets of paper together.

Having the power to make an agreement or promise official and legally required to be obeyed.

to do something, especially eat or drink, to an excessive degree for a short period

a game in which players mark off numbers on cards as they are called out, the winner being the first to mark off a complete row or pattern.

A short form of 'binoculars' or 'binocular', often used informally or in technical contexts.

involving, using, or designed for both eyes

An optical instrument with a lens for each eye, used for viewing distant objects.

Consisting of or relating to two mathematical terms connected by the plus or minus sign.

A short form of 'biography' (an account of someone's life written by someone else).

The gradual build-up of substances, especially toxins, in the tissues of a living organism over time.

(of a substance) having a biological effect on living tissue.

A suspension of airborne particles or droplets that contain or have attached to them viruses, bacteria, fungi, or other biological material.

The determination of the strength or biological activity of a substance (such as a vitamin or hormone) by measuring its effect on a living organism or tissue compared to a standard preparation.

The proportion of a drug or other substance which enters the circulation when introduced into the body and so is able to have an active effect.

Made or derived from biological materials or living organisms, especially as an alternative to petroleum-based products.

regarding all living beings as the central or most important element in existence.

Relating to the chemical processes and substances which occur within living organisms.

In a way that relates to the chemical processes and substances which occur within living organisms.

a scientist who studies the chemical substances and processes that occur in living things

The scientific study of the chemical substances and processes that occur in living organisms.

A small device that uses biological molecules, such as DNA or proteins, to perform rapid chemical analyses or data processing, often used in medical diagnostics and biotechnology.

A substance that destroys living organisms, especially a pesticide, herbicide, or fungicide.

A type of biofuel used as an alternative to or blended with petroleum diesel, typically produced from vegetable oils or animal fats.

having a wide variety of plant and animal species living in a particular area.

relating to or denoting a system of organic agriculture that incorporates certain astrological and spiritual concepts and treats farms as unified, self-sustaining organisms.

a method of organic farming that emphasizes the holistic development and interrelationships of the soil, plants, and animals as a self-sustaining system.

(of an organism or product) produced or modified by the application of biological engineering, especially genetic engineering.

The application of engineering principles and techniques to problems in biology and medicine, especially the technology involved in genetic engineering.

Relating to the ethical questions arising from biological and medical research and its applications.

A person who specializes in or studies bioethics, the discipline dealing with the ethical implications of biological research and applications, especially in medicine.

The study of the ethical issues arising from biological and medical research and its applications.

A technique for learning to control bodily functions (such as heart rate or blood pressure) by using monitoring devices to provide information about the body's responses.

A thin, slimy layer of microorganisms (such as bacteria) that adheres to a surface.

A filter that uses living material, especially microorganisms, to break down pollutants or purify air or water.

A fuel derived directly from living matter, such as plants or animal waste.

A gaseous fuel, especially methane, produced by the fermentation of organic matter.

Relating to the synthesis of substances by living organisms.

Produced or brought about by living organisms.

The scientific study of the chemical, physical, geological, and biological processes and reactions that govern the composition of the natural environment and the cycles of matter and energy.

Relating to the geographical distribution of plants and animals.

relating to the study of the geographical distribution of living organisms.

The branch of biology that deals with the geographical distribution of plants and animals.

A person who writes an account of someone else's life.

Relating to or constituting biography; containing the facts of someone's life.

Relating to the events, facts, and details of a person's life.

the story of a person's life written by someone else

A biological agent or condition that constitutes a risk to humans or the environment, especially one produced by biological research.

The science of collecting and analyzing complex biological data such as genetic codes.

Relating to biology or living organisms.

Relating to biology or living organisms.

in a way that relates to biology or living organisms

A scientist who studies living organisms and their relationship to their environment.

The scientific study of living organisms and their life processes.

The biochemical emission of light by living organisms such as fireflies and deep-sea fish.

Relating to or involving the production of light by living organisms.

a measurable substance or characteristic in an organism which indicates the presence of disease, infection, or environmental exposure.

the total quantity or weight of living organisms in a given area or volume.

a major ecological community of plants and animals extending over a large natural area, characterized by its dominant vegetation and climate.

Relating to the mechanical laws concerning the movement or structure of living organisms.

the study of the mechanical laws relating to the movement or structure of living organisms.

Relating to both biology and medicine.

the branch of medical science that applies biological and physiological principles to clinical practice.

relating to the measurement and analysis of unique physical or behavioral characteristics, especially for identification or authentication purposes.

The measurement and statistical analysis of people's unique physical and behavioral characteristics, used for identification and access control.

Relating to or involving the molecules that are present in living organisms.

a molecule that is produced by a living organism and is essential for its biological processes, such as a protein, nucleic acid, or carbohydrate.

Having a form or appearance that resembles a living organism or a natural biological form.

Relating to or having artificial body parts, especially electromechanical ones.

The science of designing and building artificial systems, especially electronic ones, that function like living organisms or parts of living organisms.

Relating to a medicinal drug produced using living organisms or their components.

Relating to the branch of science that deals with the application of the laws of physics to biological phenomena.

a scientist who uses the laws and methods of physics to study biological systems and processes.

the scientific study of the physics of biological processes and structures.

a film that tells the story of the life of a real person, especially someone well-known.

A polymer produced by a living organism, such as proteins, nucleic acids, and polysaccharides.

The search for plant and animal species from which medicinal drugs, biochemicals, and other commercially valuable compounds can be obtained.

an examination of tissue taken from the body of a living person or animal in order to discover the presence, cause, or extent of a disease.

Relating to the complex interaction of biological, psychological, and social factors in determining health, disease, or human behavior.

a device or system that supports a biologically active environment, often for growing cells or microorganisms to produce substances or carry out chemical processes.

A region defined by natural characteristics such as climate, topography, and native plant and animal life, rather than by political boundaries.

Relating to or defined by a bioregion, a geographical area defined by its natural characteristics and ecological systems rather than political boundaries.

The use of living organisms, especially microorganisms, to remove or neutralize pollutants from a contaminated site.

a recurring cycle in the physiological or behavioral functions of an organism, such as the sleep-wake cycle or menstrual cycle.

The safety of living things and the environment, especially from the risks associated with genetic research and biotechnology.

The areas of science concerned with the structure and behavior of living organisms, such as biology, biochemistry, and biophysics.

A device that uses a biological component (like an enzyme or antibody) to detect the presence of a specific chemical substance and produce a measurable signal.

Treated sewage sludge, rich in organic matter and nutrients, used as a fertilizer or soil conditioner.

the part of the earth's surface and atmosphere where living organisms exist.

a person who lives and works for an extended period inside a biosphere, a closed ecological system designed to be self-sustaining.

a scientist who applies statistical methods to the study of biological data, especially in medicine and public health.

the branch of statistics that deals with data relating to living organisms.

The animal and plant life of a particular region, habitat, or geological period.

The use of living cells or microorganisms in technology and industry, especially in genetic engineering.

Relating to biotechnology; involving the use of living organisms or biological processes in technology and industry.

The use of living cells, bacteria, etc., to make useful products such as drugs, to destroy waste matter, or for other industrial purposes.

the use of living microorganisms, or toxins produced by them, to cause disease or death in people, animals, or plants, as an act of terrorism.

relating to or resulting from living organisms.

a vitamin of the b complex, found in egg yolk, liver, and yeast, important in the metabolism of fats and carbohydrates.

A group of organisms having the same genetic constitution and physical characteristics.

the use of biological substances, such as bacteria or viruses, as weapons in warfare.

A weapon that uses harmful microorganisms (such as bacteria or viruses) or toxins produced by them to cause disease or death in people, animals, or plants.

involving, derived from, or relating to two parents.

involving or supported by two political parties.

the agreement or cooperation between two political parties that usually oppose each other's policies.

involving or made by two separate parties.

an animal that has two legs

Using two legs for walking.

The condition or trait of using only two legs for walking.

having or involving two distinct phases, stages, or aspects.

A colorless crystalline organic compound consisting of two benzene rings linked by a single bond, used in chemical synthesis and formerly as a fungicide.

An early type of aircraft with two pairs of wings, one above the other.

a two-legged support or stand, typically for a camera, rifle, or surveying instrument.

Having or relating to two poles or extremities.

involving or relating to two different races.

a type of tree with smooth bark and thin branches, or the hard wood from this tree

The outer protective layer of a birch tree.

A warm-blooded animal with feathers, wings, and a beak, which typically lays eggs and can often fly.