obtainable or accessible and ready for use or service; "kept a fire extinguisher available"; "much information is available through computers"; "available in many colors"; "the list of available candidates is unusually long"
convenient for use or disposal; "the house is available after July 1"; "2000 square feet of usable office space"
not busy; not otherwise committed; "he was not available for comment"; "he was available and willing to accompany her"
the process of ionizing; the formation of ions by separating atoms or molecules or radicals or by adding or subtracting electrons from atoms by strong electric fields in a gas
the condition of being dissociated into ions (as by heat or radiation or chemical reaction or electrical discharge); "the ionization of a gas"