Also the pattern of stressed and unstressed syllables in poetry.
    Each line usually contains a set number of stressed and unstressed syllables arranged in regular intervals so as to create symmetry in the lines.

    The system of stresses results from the fact that when two or three syllables are placed together, one syllable receives a stronger accent than the other.

                e.g., re-ceive

    In meter, the lines are divided into feet consisting of a stressed syllable and usually one or two unaccented syllables.



Names of basic feet		        Examples
--------------------			---------
iambic (most common)			de-light, re-ceive
trochaic				ga-ther, heartless
anapestic				in-ter-rupt, di-sap-pear
dactylic				hap-pi-ness, sen-ti-ment
spondaic				heart-break, child-hood
A poet measures his lines into a pattern by using a specified number of feet, with one type of foot predominating. The following terms are used to indicate the number of feet to a line.
monometer (one)
dimeter (two)
trimeter (three)
tetrameter (four)
pentameter (five)
hexameter (six)
heptameter (seven)
octometer (eight)

From melo's lecture notes.