- the larva of a freshwater mussel of the family Unionidae that lives as a temporary parasite in the gills or on other external parts of fishes.
Origin of glochidium
1895–1900; < New Latin < Greek glōch(ís) point of an arrow + -idion diminutive suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a barbed hair, esp among the spore masses of water ferns and on certain other plants
- a parasitic larva of certain freshwater mussels that attaches itself to the fins or gills of fish by hooks or suckers
C19: from New Latin, from Greek glōkhis projecting point