Atom; atomic.
The first letter of the English alphabet, called a and written in the Latin script.
The highest letter grade assigned (disregarding plusses and minuses).
Mass number.
A universal affirmative suggestion.
A rank, normally the highest rank, on any of various scales that assign letters.
Allele dominant.
A tone three fifths above C in the cycle of fifths; the sixth tone of the C major scale; the first note of the minor scale of A minor; the reference tone that occurs at exactly 440 Hz; the printed or written note A; the scale with A as its keynote.
A blood type that has a specific antigen that aggravates the immune response in people with type B antigen in their blood. People with this blood type may receive blood from type A or type O but cannot receive blood from AB or B.
Ammeter.
Answer.
Asexual.
Arsehole.
Angstrom.
Acre.
Atom.
Adult; as used in film rating.
An assist.
Ace. (including in card games)
He, or sometimes she, it.
To do with time; Each, per, in, on, by.
To do with status; In.
To do with separation; In, into.
Of.
One; any indefinite example of; used to denote a singular item of a group.
Any, every; used before a noun which has become modified to limit its scope;
One certain or particular; any single.
Used before plural nouns modified by few, good many, couple, great many, etc.
Used in conjunction with the adjectives score, dozen, hundred, thousand, and million, as a function word.
The same; one.
Someone or something like; similar to; Used before a proper noun to create an example out of it.
across
All.
All.
Distance from leading edge to aerodynamic center.
allele (recessive)
specific rotation
specific absorption coefficient
ah; er (sound of hesitation)
The first letter of the English alphabet, written in the Latin script.
Have.
The name of the Latin script letter A / a.
The name of the Cyrillic script letter А / а.