a, an—“Before a pronounced h, a long u (or eu), or a word such as one, the indefinite article should be a.” Sound, not spelling, dictates: a hotel, a historical event, a euphonious word, a union, an honor, an NFL team, a one-man band. (1)
academic degrees—Use capital letters with periods: A.A.S., B.A., B.S., Ed.D., J.D., M.A., M.B.A., M.F.A., M.L.S., M.S., Ph.D., etc.; lowercase when spelled out: associate's degree, bachelor's degree, bachelor of arts degree, bachelor of science degree, master's degree, master of fine arts degree.
ache—Compounds with ache are closed: headache, toothache, stomachache.
acknowledgment (not acknowledgement)
addresses, campus—The preferred style is building name and room number: Cleveland Hall 307, Caudell Hall 112, Butler Library 210.
addresses, street—Do not abbreviate in running text: 1300 Elmwood Avenue, 1313 Mockingbird Lane, 1250 Main Street. It is acceptable to use abbreviations in a return address, a list, the back of a brochure, etc.: 1300 Elmwood Ave.
Advanced Placement (AP)—Lowercase the words test, credit, etc.
adviser (not advisor)
advocate—Advocate is a transitive verb; it takes a direct object. One advocates a cause, not for a cause. If an intransitive verb is needed, try substituting an alternative, such as work for or argue for.
African American, Chinese American, French Canadian, Mexican American, etc.—no hyphen, noun or adjective form.
afterward (not afterwards)
ages—Use figures for ages of people and animals; hyphenate adjectival and noun forms: The woman, 37, had a 3-month-old baby. The 6-year-old dog. Acting like a 2-year-old. Avoid aged in designating ages: children ages 6 and up, not children aged 6 and up. (See numbers, figures or words?)
aging (not ageing)
Albright-Knox Art Gallery
all—Adverbial phrases beginning with all are always open: going all out, painted all over. Adjectival phrases beginning with all are always hyphenated, either before or after a noun: all-out effort, all-American player, the book is all-encompassing.
Allegany—town in New York
Allegany State Park
Alleghany in Virginia
Allegheny in Pennsylvania
all right (not alright)
alumnus (masculine singular), alumna (feminine singular), alumni (masculine plural), alumnae (feminine plural). Use the masculine plural (alumni) for groups composed of men and women.
a.m./p.m.—Lowercase and set with periods; use a single space between the numerals and the a.m. or p.m. 10:00 a.m., 7:15 p.m. (See time.)
ampersand (&)—Generally not used, except when it is part of a company's formal name: Proctor & Gamble, Barnes & Noble at Buffalo State Bookstore. Do not use in place of and.
ante- (prefix)—Generally closed, no hyphen: antediluvian, anteroom. (See prefixes and suffixes.)
anti- (prefix)—Generally closed, no hyphen: antidepressant, antihypertensive; but use the hyphen between repeated vowels, before a proper noun, or to avoid confusion or ambiguity: anti-inflammatory, anti-intellectual, anti-racist, anti-American. (See prefixes and suffixes.)
archaeology (not archeology)
Arctic—Capitalize references to the region around the North Pole: Arctic Circle, the Arctic; lowercase as an adjective meaning frigid: arctic climate, arctic air.
artist-in-residence (n., adj.)
awards—Names of awards and prizes are capitalized, but the categories usually are not: Nobel Prize in physics, Pulitzer Prize for fiction; also Nobel Prize laureate, Emmy Award–winning director.
(1) Chicago Manual of Style, 14th edition (1993), 6.60
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