Availability is whether something can be had when wanted. Check availability, limited availability, subject to availability.
Subject to availability is the phrase that lets an advertiser promise anything, and it is what the small print always says. In psychology, the availability heuristic is the habit of judging how common something is by how easily an example comes to mind.
1nounavailabilityWhether something can be had when wanted.
“Please check the availability of rooms before you book your flights.”
availability is a state.
From available, from avail, from Old French valoir, to be worth, from Latin valere.
Middle English
available
English
available
English, today
availability
From available + ity; attested since the early 1800s. available comes from Middle English available, avayllable, avayleable, equivalent of avail + able.
Etymology from Wiktionary, CC BY-SA