Words starting with A that are validated

• aktivt ordforråd — Noun – Danish ～ den mængde ord som en person bruger
• American organ — Noun – English ～ a free-reed instrument in which air is drawn in through reeds by suction bellows
• autotrophic organism — Noun – English ～ plant capable of synthesizing its own food from simple organic substances
• Abu Nidal Organization — Noun – English ～ a Palestinian international terrorist organization that split from the PLO in 1974; has conducted terrorist attacks in 20 countries; "in the 1980s the Fatah-RC was considered the most dangerous and murderous Palestinian terror group"
• American Federation of Labor and Congress of Industrial Organizations — Noun – English ～ the largest federation of North American labor unions; formed in 1955
• Anomala orientalis — Noun – English ～ introduced into United States from the Orient; larvae feed on roots of sugarcane and other grasses
• application-oriented language — Noun – English ～ a language whose statements resemble terminology of the user
• aortic orifice — Noun – English ～ the orifice from the lower left chamber of the heart to the aorta
• American oriole — Noun – English ～ American songbird; male is black and orange or yellow
• Alpha Orionis — Noun – English ～ the second brightest star in Orion
• architectural ornament — Noun – English ～ (architecture) something added to a building to improve its appearance
• Armenian Apostolic Orthodox Church — Noun – English ～ an independent Christian church established in Armenia since 300; was influenced by both Roman and Byzantine traditions
• auditory ossicle — Noun – English ～ ossicles of the middle ear that transmit acoustic vibrations from the eardrum to the inner ear
• Asio otus — Noun – English ～ slender European owl of coniferous forests with long ear tufts
• apothecaries' ounce — Noun – English ～ a unit of apothecary weight equal to 480 grains or one twelfth of a troy pound
• air out — Verb – English ～ expose to fresh air; "aerate your old sneakers"
• air out — Verb – English ～ expose to cool or cold air so as to cool or freshen; "air the old winter clothes"; "air out the smoke-filled rooms"
• act out — Verb – English ～ represent an incident, state, or emotion by action, especially on stage; "She could act neurotic anxiety"
• act out — Verb – English ～ act out; represent or perform as if in a play; "She reenacted what had happened earlier that day"
• ask out — Verb – English ～ make a date; "Has he asked you out yet?" "He asekd me to a dance"

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