1. A fertilized human egg, up to 14 days old, that can develop into an embryo; especially one to be implanted by IVF

Derived forms: pre-embryos

• genus Trogon
• genus Trollius
• genus Trombicula
• genus Tropaeolum
• genus Tropidoclonion
• genus Truncocolumella
• genus Tsuga
• genus Tuber
• genus Tubercularia
• genus Tulestoma
• genus Tulipa
• genus Tulostoma
• genus Tunga
• genus Tupaia
• genus Tupinambis
• genus Turbatrix
• genus Turdus
• genus Turnix
• genus Turreae
• genus Turritis
• genus Tursiops
• genus Tussilago
• genus Tylenchus
• genus Tympanuchus
• genus Typha