Words starting with A that are validated

• Apocynaceae — Noun – English ～ chiefly tropical trees or shrubs or herbs having milky juice and often showy flowers; many are sources of drugs
• apocynaceous — Adjective – English ～ of or relating to tropical plants of the family Apocynaceae
• Apocynum — Noun – English ～ perennial herbs with small pink or white flowers
• Apocynum androsaemifolium — Noun – English ～ North American perennial having pinkish flowers in loose cymes; used in folk medicine for pain or inflammation in joints
• apodal — Adjective – English ～ (of snakes and eels) naturally footless; "eels are apodal"
• apodeictic — Adjective – English ～ of a proposition; necessarily true or logically certain
• apodeme — Noun – English ～ ridge-like ingrowth of the exoskeleton of an arthropod that supports internal organs and provides attachment points for muscles
• Apodemus — Noun – English ～ Old World field mice
• apodictic — Adjective – English ～ of a proposition; necessarily true or logically certain
• Apodidae — Noun – English ～ swifts; in former classifications included in the order Coraciiformes
• Apodiformes — Noun – English ～ swifts; hummingbirds
• apodous — Adjective – English ～ (of snakes and eels) naturally footless; "eels are apodal"
• apoenzyme — Noun – English ～ a protein that combines with a coenzyme to form an active enzyme
• apogametic — Adjective – English ～ of or relating to the development of an embryo in the absence of fertilization
• apogamic — Adjective – English ～ of or relating to the development of an embryo in the absence of fertilization
• apogamous — Adjective – English ～ of or relating to the development of an embryo in the absence of fertilization
• apogamy — Noun – English ～ (botany) development of an embryo without fertilization; especially the development in some ferns of a sporophyte from the gametophyte without fertilization
• apogean — Adjective – English ～ relating to or characteristic of an apogee; "apogean tides occur when the moon is at the apogee of its orbit"
• apogee — Noun – English ～ a final climactic stage; "their achievements stand as a culmination of centuries of development"
• apogee — Noun – English ～ apoapsis in Earth orbit; the point in its orbit where a satellite is at the greatest distance from the Earth

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