reflective

adj 1: persistently or morbidly thoughtful [syn: {brooding}, {broody},

{contemplative}, {meditative}, {musing}, {pensive}, {pondering},

{ruminative}]

2: capable of physically reflecting light or sound; "a

reflective surface" [ant: {nonreflective}]

3: devoted to matters of the mind; "the reflective type"

reflexive

A {relation} R is reflexive if, for all x, x R x.

{Equivalence relations}, {pre-orders}, {partial orders} and

{total orders} are all reflexive.

(1999-01-28)