Dictionary

gill slit

noun

Definition of GILL SLIT

1
:  any of the openings or clefts between the gill arches in vertebrates that breathe by gills through which water taken in at the mouth passes to the exterior and so bathes the gills
2
:  any of the rudimentary grooves in the neck region of the embryos of air-breathing vertebrates that correspond to the gill slits
3
:  the external opening to the cavity containing the gills when a protective covering of the gills is present

First Known Use of GILL SLIT

1854
Medical Dictionary

gill slit

noun

Medical Definition of GILL SLIT

:  one of the openings or clefts between the gill arches in vertebrates that breathe by gills through which water taken in at the mouth passes to the exterior and bathes the gills; also :  branchial cleft

Browse

Next Word in the Dictionary: gilly ()Previous Word in the Dictionary: gill scoopAll Words Near: gill slit
July 04, 2015
stringent Hear it
rigorous, strict, or severe
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears