ostensio
From LSJ
λύπης ἰατρός ἐστιν ὁ χρηστὸς φίλος → a true friend is grief's physician, a worthy friend is a physician to your pain
Latin > English (Lewis & Short)
ostensĭo: ōnis, f. ostendo,
I a showing, exhibiting, manifestation (post-class.): nova ostensio, App. M. 3, p. 133, 19; Tert. adv. Marc. 5, 11: HOMINVM ARMIGERORVM, a mustering, parade, Inscr. Salm. ad Lampr. Alex. Sev. 33: si in me est iniquitas haec, da ostensionem, expose, make manifest, Vulg. 1 Reg. 14, 41: secretorum, id. Dan. 5, 12.