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n. pl. glo·chid·i·a (-ē-ə)
The parasitic larva of most freshwater mussels, having hooks for attaching to the gills or other external parts of a host fish.
[New Latin glōchidium : Greek glōkhīs, barb of an arrow + Latin -idium, diminutive suff. (from Greek -idion).]
n, pl -chidia (-ˈkɪdɪə)
1. (Botany) Also called: glochid a barbed hair, esp among the spore masses of water ferns and on certain other plants
2. (Zoology) 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]
glo•chid•i•um(gloʊˈkɪd i əm)
n., pl. -chid•i•a (-ˈkɪd i ə)
1. a short hair, bristle, or spine having a barbed tip.
2. the larva of a freshwater mussel of the family Unionidae: a parasite of fishes.
[1895–1900; < New Latin < Greek glōch(ís) point of an arrow]