trochlear, a.
(ˈtrɒkliːə(r))
[ad. mod.L. trochleār-is, f. trochlea: see prec. and -ar.]
1. Anat. Belonging to or connected with a trochlea, as a muscle, nerve, etc.; forming a trochlea, pulley-like, as a surface of a bone, etc.
trochlear fossa, t. spine, parts of the frontal bone connected with the trochlea of the eye. t. muscle, the superior oblique muscle of the eye. t. nerve, each of the fourth pair of cranial nerves, the motor nerves for the trochlear muscles. t. nucleus, a nucleus in the brain from which the trochlear nerve arises.
| 1681 tr. Willis' Rem. Med. Wks. Vocab., Trochlear muscle, a muscle made almost like a windlas or pully. 1808 Barclay Muscular Motions 304 In many cases..the particular direction in which several muscles act..is regulated by trochlear ligaments or pulleys. 1870 N. F. Hele Aldeburgh iv. 29 A trochlear end of a humerus. 1875 Sir W. Turner in Encycl. Brit. I. 840/2 The patella moves up and down the trochlear surface of the femur. |
2. Bot. Pulley-shaped; circular and contracted in the middle like the wheel of a pulley, as the embryo of
Commelynaceæ.
| 1830 Lindley Nat. Syst. Bot. 255 It [Spiderwort] has scarcely any affinity with Palms, except in its trochlear embryo. |
So
trochleariform (
-ˈærɪfɔːm)
a. Bot. [
f. mod.L.
trochleāri-s +
-form;
irreg. for
*trochleiform,
f. trochlea +
-form]
= sense 2 above;
‖ trochlearis (
-ˈɛərɪs),
Anat. [
mod.L. (see above),
sc. musculus or
nervus], the trochlear muscle, also the trochlear nerve;
ˈtrochleary a.,
Anat. (
rare)
= sense 1 above;
ˈtrochleate a. Bot. = sense 2 above (
Cassell's Encycl. Dict. 1888).
| 1895 Funk's Stand. Dict., *Trochleariform. |
| 1693 tr. Blancard's Phys. Dict. (ed. 2), *Trochlearis, the upper, or greater oblique Muscle of the Eye. 1842 Penny Cycl. XXII. 78/2 The pulley of the trochlearis muscle of the eye. 1890 Billings Med. Dict., Trochlearis...2. Trochlear nerve. |
| 1828 Webster, *Trochleary, pertaining to the trochlea; as, the trochleary muscle,..the trochleary nerve... Parr. |