— decussately , adv.
v. /di kus"ayt, dek"euh sayt'/ ; adj. /di kus"ayt, -it/ , v. , decussated, decussating , adj.
v.t. , v.i.
1. to cross in the form of an X; intersect.
adj.
2. in the form of an X; crossed; intersected.
3. Bot. arranged along the stem in pairs, each pair at right angles to the pair next above or below, as leaves.
[ 1650-60; decussatus divided in the form of an X (ptp. of decussare ), equiv. to L decuss ( is ) the numeral ten, orig., a ten-as weight ( dec ( em ) TEN + -ussis, comb. form of as AS 2 ) + -atus -ATE 1 ]