corroborant

Etymology
From , present participle. See.

Adjective

 * 1) strengthening; supporting; corroborating

Noun

 * 1) Anything that gives strength or support; a tonic.
 * 2) A piece of corroborating evidence.
 * 1) A piece of corroborating evidence.
 * 1) A piece of corroborating evidence.