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Definitions for expendability. Here are all the possible meanings and translations of the word expendability. Wiktionary(0.00 / 0 votes)Rate this definition: expendability(Noun) The state or quality of being expendable.
aâ¢vail. 1. to be of use, advantage, or value to; profit: All our efforts availed us little. 2. to be of use; have force or efficacy; serve; help: Nothing you do will avail. 3. to be of value or profit. 4. effective use in the achievement of a goal or objective; advantage; use: His help was of no avail.