noradrenaline
UK[ˌnɔːrəˈdrɛnəlɪn]US[ˌnɔːrəˈdrɛnəlɪn]
n
a hormone and neurotransmitter that is released by the adrenal gland and some nerve cells, increasing heart rate, blood pressure, and blood sugar levels, especially in response to stress or danger.
Morpheme Breakdown
nor
adren
aline
nor
chemical variant
adren
adrenal gland
aline
amine compound
Etymology
the word 'noradrenaline' is a modern scientific compound formed in the early 20th century. its components are drawn from international scientific vocabulary: the prefix 'nor-' is used in chemistry to designate a structural analog of a compound, here indicating it is the demethylated form of adrenaline. the core element 'adren-' directly references the adrenal glands, the organ where this substance was first identified and is produced. the suffix '-aline' is a streamlined form of '-amine', pointing to its biochemical classification as a catecholamine. thus, the term literally and logically means "the amine from the adrenal glands, in its nor- form," precisely describing its origin and chemical relationship to the more familiar hormone adrenaline.
Analysis
Structure: nor (chemical variant) + adren (adrenal gland) + aline (amine compound)
- nor- (prefix): from germanic/chemical nomenclature, meaning "normal" or denoting a parent compound without additional methyl groups; in this word, it indicates a specific chemical structure related to, but distinct from, adrenaline.
- adren- (root): from latin adrenalis, from ad- (near) + renes (kidneys); refers to the adrenal glands, which are located near the kidneys.
- -aline (suffix): a variant of "-amine", from "ammonia"; in chemical terminology, it denotes a type of organic compound containing a nitrogen atom.
Examples
noradrenaline levels surge during intense physical exercise or a frightening experience.
the drug works by blocking the reuptake of noradrenaline in the brain.
doctors measured the patient's plasma noradrenaline to assess sympathetic nervous system activity.