Defn: Having the seeds straight, as in the fruits of some umbelliferous plants; — opposed to coelospermous. Darwin.
ORTHOSTADE
Or"tho*stade, n. Etym: [Gr. (Anc. Costume)
Defn: A chiton, or loose, ungirded tunic, falling in straight folds.
ORTHOSTICHY
Or*thos"ti*chy, n.; pl. Orthostichies. Etym: [Ortho- + Gr. (Bot.)
Defn: A longitudinal rank, or row, of leaves along a stem.
ORTHOTOMIC
Or`tho*tom"ic, a. Etym: [Ortho- + Gr. (Geom.)
Defn: Cutting at right angles. Orthotomic circle (Geom.), that circle which cuts three given circles at right angles.
ORTHOTOMOUS
Or*thot"o*mous, a. (Crystallog.)
Defn: Having two cleavages at right angles with one another.
ORTHOTOMY
Or*thot"o*my, n. (Geom.)