a
/ə,ā/
determiner
- used when referring to someone or something for the first time in a text or conversation."a man came out of the room"
- used to indicate membership of a class of people or things."he is a lawyer"
- used when expressing rates or ratios; in, to, or for each; per."typing 60 words a minute"
It is similar in shape to the Ancient Greek letter Alpha, from which it derives. ... The uppercase version consists of the two slanting sides of a triangle, ...
capitalized : the one of the four ABO blood groups characterized by the presence of antigens designated by the letter A and by the presence of antibodies ...
Used for acquired possessions, while o is used for possessions that are inherited, out of personal control, and for things that can be got into (houses, clothes ...
A prefix meaning “without” or “not” when forming an adjective (such as amorphous, without form, or atypical, not typical), and “absence of” when forming a noun ...