invertebrate
UK[ɪnˈvɜːtɪbrət]US[ɪnˈvɜːrtɪbrət]
n
an animal that does not have a backbone or spinal column.
adj
lacking a backbone or spinal column; of or relating to invertebrates.
Morpheme Breakdown
in
vertebr
ate
in
not
vertebr
spine/backbone
ate
having the nature of
Etymology
the word invertebrate is a modern scientific term constructed from latin components. it is formed by combining the negative prefix "in-" with "vertebr-", the stem of "vertebra" (a bone of the spinal column), and the adjectival suffix "-ate". literally, it means "not having vertebrae". the latin root vertere, meaning "to turn", underpins "vertebra", referencing the turning joints of the spine. thus, the term logically categorizes animals based on the absence of the segmented backbone structure that defines their vertebrate counterparts, moving from the literal concept of "turning joints" to a key taxonomic distinction.
Analysis
Structure: in (not) + vertebr (spine/backbone) + ate (having the nature of)
- in: a latin prefix meaning "not, without".
- vertebr: from latin vertebra, meaning "joint, vertebra", from vertere "to turn".
- ate: a latin-derived suffix used to form adjectives meaning "having the nature or quality of".
Examples
worms, insects, and jellyfish are all examples of invertebrates.
the museum has a fascinating exhibit on invertebrate fossils.
from an evolutionary perspective, invertebrates represent the vast majority of animal species.