English Dictionary
◊ REVERSE
reverse
adj 1: directed or moving toward the rear; "a rearward glance"; "a
rearward movement" [syn: {rearward}]
2: of the transmission gear causing backward movement in a
motor vehicle; "in reverse gear" [ant: {forward}]
3: reversed (turned backward) in order or nature or effect
[syn: {inverse}]
n 1: a relation of direct opposition; "we thought Sue was older
than Bill but just the reverse was true" [syn: {contrary},
{opposite}]
2: the gears by which the motion of a machine can be reversed
3: an unfortunate happening that hinders of impedes; something
that is thwarting or frustrating [syn: {reversal}, {setback},
{blow}]
4: the side of a coin or medal that does not bear the principal
design [syn: {verso}] [ant: {obverse}]
5: turning in the opposite direction [syn: {reversion}, {reversal},
{turnabout}, {turnaround}]
v 1: change to the contrary; "The trend was reversed" [syn: {change
by reversal}, {turn}]
2: turn inside out or upside down [syn: {invert}]
3: rule against; "The Republicans were overruled when the House
voted on the bill" [syn: {overrule}, {overturn}, {override},
{overthrow}]
4: annul by recalling or rescinding; "He revoked the ban on
smoking"; "lift an embargo" [syn: {revoke}, {annul}, {lift},
{countermand}, {repeal}, {overturn}, {rescind}]
English Computing Dictionary
◊ DID YOU MEAN INVERSE?
inverse
Given a {function}, f : D -> C, a function g : C
-> D is called a left inverse for f if for all d in D, g (f d)
◦ d and a right inverse if, for all c in C, f (g c) ◦ c and an
inverse if both conditions hold. Only an {injection} has a
left inverse, only a {surjection} has a right inverse and only
a {bijection} has inverses. The inverse of f is often written
as f with a -1 superscript.
(1996-03-12)