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.

the study of molluscs and their shells / the hobby of shell collecting

The doctrine, in the Roman Catholic Church, that the Virgin Mary was conceived biologically but free from original sin. / December 8th (The Feast of the Immaculate Conception of Mary).

(chemistry) the molality of a solution

(chemistry) the molarity of a solution

A spiral marine shell (Fasciolaria distans), of Florida and the West Indies, marked by narrow, dark, revolving lines.

An album of music where the content follows an overall theme or narrative.

The act of conceding. / A compromise: a partial yielding to demands or requests. / Land granted by an authority for some specific purpose, particularly:

To grant or approve by means of a concession agreement.

Having an excessively favorable opinion of one's abilities, appearance, etc.; vain and egotistical.