Embryo

1. a. Pertaining to an embryo; rudimentary; undeveloped; as, an embryo bud.
2. n. The first rudiments of an organism, whether animal or plant
3. n. The young of an animal in the womb, or more specifically, before its parts are developed and it becomes a fetus (see Fetus).
4. n. The germ of the plant, which is inclosed in the seed and which is developed by germination.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.