| 释义 |
recurrent, a. and n.2|rɪˈkʌrənt|
[ad. L. recurrent-em, pres. pple. of recurrĕre to recur. Cf. F. récurrent (16th c.).]
A. adj.
1. Anat. and Bot. Of a nerve, vein, artery, branch, etc.: Turned back so as to run or lie in a direction opposite to its former one. recurrent nerves, the laryngeal and meningeal branches of the pneumogastric nerve.
1611Florio, Recorrenti vene, the veines called the recurrant veines. 1664Power Exp. Philos. i. 68 That pleasant Experiment by tying the recurrent Nerves in a living Dogg. 1712Sloane in Phil. Trans. XXVII. 499 Two Dogs, which had their Recurrent Nerves cut, lost their Barking and Voice. 1775J. Jenkinson Brit. Plants Gloss., Recurrent, running backwards. 1830Lindley Nat. Syst. Bot. 190 The corolla, whose tube has five nerves..dividing at top into recurrent branches. 1842E. Wilson Anat. Vade M. (ed. 2) 299 The two recurrent arteries frequently arise by a commmon trunk. 1877Jordan N. Amer. Ichthyog. ii. 71 Its numerous rudimentary rays recurrent above and below the caudal peduncle.
b. Path. recurrent sensibility (see quots.).
1873A. Flint Nerv. Syst. ii. 82 The sensibility of the anterior root is recurrent, being derived from the posterior root through the periphery. 1877M. Foster Physiol. iii. i. 343 The phenomena are probably due to the fact, that bundles of sensory fibres of the posterior root after running a short distance down the mixed trunk turn back and run upwards in the anterior root, and by this recurrent course give rise to the recurrent sensibility.
†2.
a. (See quot.) Obs. rare—0.
1656Blount Glossogr., Recurrent, returning hastily, running again or back quickly, having recourse to.
†b. Of verses: (See quot. and cf. B. 2). Obs.—0
After L. recurrentes versus (Sidonius).
1706Phillips (ed. Kersey), Recurrents, or Recurrent Verses, such Verses as are read the same backward and forward.
3. Occurring or coming again (esp. frequently or periodically); reappearing.
1666Harvey Morb. Angl. xiv. (1672) 33 Short intermittent, or swift recurrent pains do precipitate Patients into Consumptions. 1850Blackie æschylus I. 47 From time to time In children's children recurrent appears The ancestral crime. 1860Tyndall Glac. ii. xxvi. 368 The bands must be due to some regularly recurrent cause. 1893A. S. Eccles Sciatica 82 Six patients have suffered from recurrent sciatica after periods varying from six months to four years.
†b. Math. (See recurring ppl. a. 2 a.) Obs.
1763Emerson Meth. Increments 144 To find the sum of 50 terms of the recurrent series..1 + 3x + 8x2 + 21x3, etc.
c. Of a crystal: (see quot.).
1816R. Jameson Char. Min. 203 Recurrent tinstone..may be described as a rectangular four-sided prism, acuminated on the extremities with four planes, which are set on the lateral edges, and the eight edges formed by the acuminating and lateral planes truncated.
d. Math. recurrent relation = recurrence relation.
1896Phil. Trans. R. Soc. A. CLXXXVII. 522 These recurrent relations between the functions for different values of n hold for general complex values of m and n. 1931E. W. Hobson Theory Spherical & Ellipsoidal Harmonics ii. 67 Recurrent relations..between the functions Qn(µ) for different values of n.
B. n.
1. A recurrent artery or nerve; esp. the right or left recurrent laryngeal nerve.
1597A. M. tr. Guillemeau's Fr. Chirurg. 19/2 The muscles which are serviceable to the speach or voyce, as are the recurrentes, or retrogradinge muscles. 1615Crooke Body of Man 365 When it commeth to the Axillary artery..it transmitteth..three braunches from the inner side..which being reflected toward the head and vnited do make the right Recurrent. 1741A. Monro Anat. Nerves (ed. 3) 53 The Muscles of the Larynx being in a good measure supplied with Nerves from the Recurrents. 1808Barclay Muscular Motions 254 The course of the nervous branches that are called recurrents. 1876J. S. Bristowe Th. & Pract. Med. (1878) 558 Pressure on the right recurrent, which may be produced by innominate or subclavian aneurysm, will have a corresponding effect on the right vocal cord.
†2. A recurrent verse. Obs. rare.
1605Camden Rem., Rhythmes 26 Beside these [metres], our Poets hath their knacks as young Schollers call them, as Ecchos.., Serpentine verses, Recurrents, Numeralls, &c. 1656Blount Glossogr. s.v., A kind of verses called Recurrents. 1706[see A. 2 b]. 1727–41[see reciprocal a. 1 c].
Hence reˈcurrently adv.
1868Bain Ment. & Mor. Sc. 720 Only what is instrumental in its production and in most cases customarily or recurrently instrumental. 1877‘H. A. Page’ De Quincey II. xix. 183 This tendency to real life..declaring itself recurrently and with great strength. |