IPA: //ˌmækroʊˈɡæmiːt//
KK: /mækroʊˈɡæmiːt/
The larger type of reproductive cell, typically female, in organisms that have two different kinds of gametes.
In many species, the macrogamete is essential for fertilization and the development of the embryo.
Macrogamete → It is formed from "macro-" (from Greek "makros", meaning large) and "gamete" (from Greek "gametēs", meaning spouse or mate). The word "macrogamete" refers to a large gamete, typically the female gamete in sexual reproduction, emphasizing its size in comparison to the male gamete.
Think of 'macro-' meaning large, and 'gamete' referring to a mate — a macrogamete is a large reproductive cell.