Webster's 1828 Dictionary
ACCESSIBILITY
n.The quality of being approachable; or of admitting access.
Webster's 1913 Dictionary
ACCESSIBILITY
Ac *cess `i *bil "i *ty, n. Etym: [L. accessibilitas: cf. F.accessibilité. ]
Defn: The quality of being accessible, or of admitting approach; receptibility. Langhorne.
Oxford Thesaurus
accessibility
accessibility noun 1 security concerns have to be balanced with public accessibility: ease of access, availability, approachability, obtainability; nearness, convenience, handiness, readiness; rare attainability, reachability. ANTONYMS inaccessibility. 2 the accessibility of this type of music: comprehensibility, intelligibility, understandability, penetrability, approachability. ANTONYMS incomprehensibility. 3 journalists loved his accessibility: approachability, availability, easy-going manner, informality, friendliness, hospitable manner, agreeableness, obliging nature, congeniality, affability, cordiality. ANTONYMS unapproachability.