general no hyphens, prefixes apply
before a consonant sound
before vowel sound
not an acronym. Dr., Gov., Lt., Mr., Rep., the Rev., Sen.
accused of, not with a crime
Ave., Blvd., and St. (only ones abr) spell them out for a formal name
Addresses Compass directions
abbrivate directional ends of a street quadrants;do not abbreviate if number omitted - West 43rd street
before a noun use a hypen, when placed after no hyphens
specify the source in an alleged case; not used to describe event has occurred
specify source; make clear of unproved action
introduces more than two
result obtained by diving a sum by the # of quantities
sense used in arithmetic and statistics
middle number of points in a series arranged in order of size.
standard of average performance for a given group