- Bot. a barbed hair or bristle, as on certain cactuses or on the spore masses of ferns
- Zool. the parasitic larval stage of freshwater mussels (family Unionidae) which infests the gills, etc. of many fishes
Origin of glochidiumModern Latin ; from Classical Greek gl?chis, point (see gloss) + Modern Latin -idium, diminutive suffix ; from Classical Greek -idion
Origin of glochidiumNew Latin gl&omacron;chidium : Greek gl&omacron;kh&imacron;s, barb of an arrow + Latin -idium, diminutive suff. (from Greek -idion).
Ancient Greek the point of an arrow.