— decubital , adj.
/di kyooh"bi teuhs/ , n. , pl. decubitus . Med.
any position assumed by a patient when lying in bed.
[ 1865-70; decubi-, var. s. of decumbere to lie down, take to one's bed ( de- DE- + -cumbere, telic v., with nasal infix, corresponding to cubare to lie) + -tus suffix of verbal action ]