vis·i·ble / ˈvizəbəl/ • adj. 1. able to be seen: the church spire is visible from miles away. ∎  Physics (of light) within the range of wavelengths to which the eye is sensitive. ∎  able to be perceived or noticed easily: a visible improvement. ∎  in a position of public prominence: a highly visible member of the royal entourage. 2. of or relating to imports or exports of tangible commodities: the visible trade gap.DERIVATIVES: vis·i·ble·ness n.vis·i·bly / -blē/ adv. he was visibly uncomfortable.

visible In genetics, applied to a mutant whose phenotype may actually be observed, as opposed to lethals, whose occurrence may be inferred only from the absence of an expected class of individuals in the progeny of a cross designed to detect induced mutants.

visible XIV. — (O)F. visible or L. vīsibilis, f. vīs-, pp. stem of vidēre see; see WIT2, -IBLE.
So visibility XVI. — F. or late L.

visible In genetics, applied to a mutant whose phenotype may actually be observed, as opposed to lethals, whose occurrence may only be inferred from the absence of an expected class of individuals in the progeny of a cross designed to detect induced mutants.