ETYM New Lat., from Greek omega, i.e., the great or long o. Related to Mickle.
1. The ending of a series or sequence; SYN. z.
2. The last (24th) letter of the Greek alphabet.
Last (twenty-fourth) letter (w, w) of Greek alphabet; ending.
W last letter of the Greek alphabet used as a symbol for the mass density of the universe. If w is less than 1.0 the universe will expand forever; if it is more than 1.0 the gravitational pull of its mass will be strong enough to reverse its expansion and cause its eventual collapse. The value of w is estimated as probably being between 0.1 and 1.0.
Veliko, tj. dugo ili produženo "o" u grčkom jeziku, poslednje, dvadeset četvrto slovo u grčkoj azbuci; alfa i omega, početak i kraj, sve i sva. (grč.)