The act of conceiving. / The state of being conceived; the beginning. / The fertilization of an ovum by a sperm to form a zygote. / The start of pregnancy.

Of or relating to conception. / Relating to a concept, idea, or thought. (More often, conceptual.)

plural of conception

plural of concept

An abstract and general idea; an abstraction.

to conceive; to dream up

relating to conception (in all senses)

in concept

(advertising, nonstandard) The generation of new ideas.

Capable of being conceived; conceivable.