Neural \Neu"ral\, a. [Gr. ? nerve.]

(Anat. & Zo["o]l.) relating to the nerves or nervous system; taining to, situated in the region of, or on the side with, the neural, or cerebro-spinal, axis; -- opposed to hemal. As applied to vertebrates, neural is the same as dorsal; as applied to invertebrates it is usually the same as ventral. Cf. Hemal.

Neural arch (Anat.), the cartilaginous or bony arch on the dorsal side of the centrum of the vertebra in a segment of the spinal skeleton, usually inclosing a segment of the spinal cord.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Posterior \Pos*te"ri*or\ (p[o^]s*t[=e]"r[i^]*[~e]r), a. [L. posterior, compar. of posterus coming after, from post after. See Post-.]

1. Later in time; hence, later in the order of proceeding or moving; coming after; -- opposed to prior.

Hesiod was posterior to Homer. --Broome.

2. Situated behind; hinder; -- opposed to anterior.

3. (Anat.) At or toward the caudal extremity; caudal; -- in human anatomy often used for dorsal.

4. (Bot.) On the side next the axis of inflorescence; -- said of an axillary flower. --Gray.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Dorsal \Dor"sal\, a. [F. dorsal, LL. dorsalis, fr. L. dorsualis, fr. dorsum back; cf. Gr. ?, ?, mountain ridge. Cf. Dorse, Dorsel, Dosel.]

1. (Anat.) Pertaining to, or situated near, the back, or dorsum, of an animal or of one of its parts; notal; tergal; neural; as, the dorsal fin of a fish; the dorsal artery of the tongue; -- opposed to ventral.

2. (Bot.)
   (a) Pertaining to the surface naturally inferior, as of a leaf.
   (b) Pertaining to the surface naturally superior, as of a creeping hepatic moss.

Dorsal vessel (Zo["o]l.), a central pulsating blood vessel along the back of insects, acting as a heart.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Dorsal \Dor"sal\, n. [LL. dorsale, neut. fr. dorsalis. See Dorsal, a.]

(Fine Arts) A hanging, usually of rich stuff, at the back of a throne, or of an altar, or in any similar position.

Source: Webster's Revised Unabridged Dictionary (1913)