- Main Entry:
- 1a
- Pronunciation:
-
\ˈā\
- Function:
- noun
- Inflected Form(s):
- plural a's or as \ˈāz\
- Usage:
- often capitalized often attributive
- Date:
- before 12th century
1 a: the 1st letter of the English alphabet b: a graphic representation of this letter c: a speech counterpart of orthographic a2: the sixth tone of a C-major scale3: a graphic device for reproducing the letter a4: one designated a especially as the first in order or class5 a: a grade rating a student's work as superior in quality b: one graded or rated with an A6: something shaped like the letter A7capitalized : 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 against the antigens present in the B blood group
