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Webster 1913 Edition

Adj.

Disposed to yield or comply.

[R.]

–

Yield′a-ble-ness

Noun.

[R.]

Bp. Hall.

yieldable ‎(comparative more yieldable, superlative most yieldable)

(archaic) Disposed to yield or comply.
(engineering) Capable of yielding under pressure, rather than being bent or snapped.