{ Dex*tror"sal (?), Dex"trorse` (?), }
a. [L. dextrorsum, contr. fr.
dextrovorsum, dextroversum, toward the right side;
dexter right + versus, vorsus, p. p. of
vertere, vortere, to turn.] Turning from the left
to the right, in the ascending line, as in the spiral inclination of
the stem of the common morning-glory.
☞ At present scientists predicate dextrorse or sinistrorse
quality of the plant regarded objectively; formerly the plant was
regarded subjectively, and what is now called dextrorse was then
considered sinistrorse.