| Word | Definitions | Synonyms |
|---|---|---|
| apogamy | (noun) (botany) development of an embryo without fertilization; especially the development in some ferns of a sporophyte from the gametophyte without fertilization | - |
| apogee | (noun) apoapsis in Earth orbit; the point in its orbit where a satellite is at the greatest distance from the Earth | - |
| (noun) a final climactic stage | Synonyms: culmination |