Definition of glochidium
plural -ia \-dē-ə\
: the larva of a freshwater mussel (family Unionidae) that develops as an external parasite on fish
Origin of glochidium
New Latin, from Greek glōchis projecting point + New Latin -idium
First Known Use: 1875
Learn More about glochidium
Britannica.com: Encyclopedia article about "glochidium"
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