Definition of "spermatozoon" []

• The mature fertilizing gamete of a male organism, usually consisting of a round or cylindrical nucleated cell, a short neck, and a thin motile tail. Also called sperm cell, zoosperm. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "-- The male reproductive element is called spermatozoon, or zoosperm."
• "Dorland's Medical Dictionary defines pregnancy, in relevant part, as "the condition of having a developing embryo or fetus in the body, after union of an oocyte and spermatozoon.""
• "To explain such “different people choices”, Parfit adopts the genetic identity view of personal identity: the identity of a person is at least in part constituted by the DNA the person has as a result of which ovum was fertilized by this or that spermatozoon in the creation of this person."