to order or allow (somebody) to leave; to send (somebody) away
to discharge (somebody) from employment or service
to put (a suggestion, etc) out of one's mind or reject it as unworthy of serious consideration
said of a judge: to refuse a further hearing to (a court case)
in cricket, to bowl out (a batsman or side)
dismissal noun
dismissible adj
[late Latin dismissus, modification of Latin dimissus, past part. of dimittere, from dis- apart + mittere to send]