(botany) any chemical substance secreted by a gamete that attracts another gamete during sexual reproduction
[gam-uh-pet-l-uh s] /ˌgæm əˈpɛt l əs/ adjective, Botany. 1. having the petals united. /ˌɡæməʊˈpɛtələs/ adjective 1. (of flowers) having petals that are united or partly united, as the primrose Also sympetalous Compare polypetalous
[gam-uh-fil-uh s] /ˌgæm əˈfɪl əs/ adjective, Botany. 1. having leaves united by their edges. /ˌɡæməʊˈfɪləs/ adjective 1. (of flowers) having united leaves or perianth segments
[gam-uh-sep-uh-luh s] /ˌgæm əˈsɛp ə ləs/ adjective, Botany. 1. having the sepals united. /ˌɡæməʊˈsɛpələs/ adjective 1. (of flowers) having united or partly united sepals, as the primrose Compare polysepalous
[gam-awf, -of] /ˈgæm ɔf, -ɒf/ noun 1. George, 1904–68, U.S. nuclear physicist and writer, born in Russia.