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adj. Biology
Directed forward and upward, as the hairs on certain plant stems.

[New Latin antrōrsum, from Latin anterior, before (perhaps after intrōrsum, inwards, from interior, inside); see anterior.]

an′trorse′ly adv.


(Biology) biology directed or pointing upwards or forwards
[C19: from New Latin antrorsus, from antero- front + -orsus, as in Latin introrsus; see introrse]
anˈtrorsely adv



Biol. bent in a forward or upward direction.
[1855–60; < New Latin antrorsus=antr-, as presumed base of Latin anterior anterior + -orsus, < Latin intrōrsus introrse]
an•trorse′ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.antrorse - bent or curved forward or upward; "a plant having antrorse hairs on the stem"
biological science, biology - the science that studies living organisms
retrorse - bent or curved backward or downward; "leaves with retrorse barbs"
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References in periodicals archive ?
Preopercle without antrorse spines on horizontal limb; horizontal limb with one to a few serrae or with irregular border; vertical limb with numerous small serrae; region of angle with larger serrae, or with roughened border.
Leaves numerous per rosette, 5dm long, narrowly triangular, densely covered with scales beneath, becoming glabrous above, margin serrate with slender antrorse red spines, to 7mm long and slightly curved; sheaths 6cm wide, 3cm tall, lustrous castaneous beneath.
Flowers on pedicels, funnel-shaped calix, with obtuse lobes, densely sericeous outside, densely sericeous inside at base; corolla, yellow when young, later turning red, glabrous outside at base, densely sericeous with long, antrorse hairs, glabrous inside, tube 4.
Teeth in about 5 rows; 7 teeth along middle, about 17 along posterior margin, but at least one tooth missing; teeth compressed, along margins and anteriorly slender, unicuspid; mediad and caudad slightly coarser and longer, bicuspid, with strong posterior, antrorse cusp, and minor anterior blunt or pointed cusp subdistally.
1 mm wide at base, the basal ones 3-10 mm apart, antrorse (upper ones) to retrorse (basal ones) uncinate; fascicles 7 to 11 in number, polystichously arranged, suberect, sessile, globose-capitate, strobilate, densely rosulate, 12-15 mm long (excluding the petals), 14-17 mm in diameter, 7 to 12-flowered; floral bracts broadly triangular-ovate, acuminate, slightly carinate toward the apex, equaling to slightly shorter than the sepals, but recurved and distinctly exposing them, green, nerved, inconspicuously and sparsely white-lepidote but soon glabrous, 10-13 x 8-10 mm, subdensely spinulose, spines irregularly curved, 0.