gill cleft

9.5

A slit in the throat of fish and other water animals that lets water pass for breathing

noun
/ɡɪl klɛft/

Specialized

: hendidura branquial

Water passes through the fish's mouth and out through the gill clefts.

Examples

The young shark has several gill clefts along each side of its head.
In amphibian larvae, gill clefts are a vital pathway for respiration.
The gill cleft allows fish to breathe underwater.
Many fish species have multiple gill clefts on each side.
In amphibian larvae, gill clefts are a vital pathway for respiration.
Water passes through the fish's mouth and out through the gill clefts.
The young shark has several gill clefts along each side of its head.

Synonyms

gill slit

vsgill cleft

Specialized

1 8.1

An opening on the side of a fish's head that lets water pass so the fish can breathe

is used for any slit-like respiratory opening, not only paired ones

branchial cleft

vsgill cleft

Specialized

9.9

A narrow opening in a fish's throat where water passes for breathing

is the preferred term emphasizing a series of such openings

Surface Forms

gill cleft singular

gill clefts plural

Morphology

gill + cleft

The noun combines the literal meanings of 'gill' (breathing organ) and 'cleft' (a slit or opening), so the phrase denotes a slit-like opening associated with a gill. Although it is specialized biological terminology, the composition is directly derivable from the constituents, so a learner who knows both words can infer the meaning.

Etymology

Gill cleft simply names the breathing slits on fish: gill is the breathing organ and cleft means a small split or opening, so the words paint the picture of a slit where water passes. That's why the term refers to the slit-like openings fish use 'to breathe'.