ho·mun·cu·lus 
(hō-mŭngkyə-ləs, hə-)
(hō-mŭngkyə-ləs, hə-)n. pl. ho·mun·cu·li (-lī′)
1. A diminutive human.
2. A miniature, fully formed individual believed by adherents of the early biological theory of preformation to be present in the sperm cell.
[Latin, diminutive of homō, man; see dhghem- in the Appendix of Indo-European roots.]
ho·muncu·lar adj.