A discrete particle, such as a → photon or an → electron. See also → corpuscular radiation, → corpuscular theory of light.
From L. corpusculum, dim. of corpus "body," cf. Av. kehrp-, kərəf- "body, form," Skt. krp- "body, form," O.E. hrif "belly," O.H.G. href "womb, belly, abdomen;" Ger. Körper (originally Korper) is a loan word from L. corpus; PIE *kwrpes, from base *kwrep- "body, form." → -ule.
Karpul, from Mid.Pers. karp "body, form," cognate with L. corpus, as above, + diminutive suffix → -ule.