INVALID

n. & v. --n. 1 a person enfeebled or disabled by illness or injury. 2 (attrib.) a of or for invalids (invalid car; invalid diet). b being an invalid (caring for her invalid mother). --v. (invalided, invaliding) 1 tr. (often foll. by out etc.) remove from active service (one who has become an invalid). 2 tr. (usu. in passive) disable (a person) by illness. 3 intr. become an invalid. øøinvalidism n. [L invalidus weak, infirm (as IN-(1), VALID)]