plural of secretion

(countable) any substance that is secreted by an organism / (uncountable) the act of secreting a substance, especially from a gland

the act of hiding something

Relating to secretions.

That may be secreted

(countable) A piece of knowledge that is hidden and intended to be kept hidden. / The key or principle by which something is made clear; the knack. / Something not understood or known.

Being or kept hidden. / (obsolete) Withdrawn from general intercourse or notice; in retirement or secrecy; secluded.

(transitive) To make or keep secret. / (transitive) To hide secretly.

(obsolete, rare) Separated.

(physiology, transitive, of organs, glands, etc.) To extract a substance from blood, sap, or similar to produce and emit waste for excretion or for the fulfilling of a physiological function.