| 释义 |
anaclastic, a. and n.|ænəˈklɑːstɪk, -æ-|
[f. Gr. ἀνάκλαστ-ος refracted (f. ἀνα-κλά-ειν to refract, bend back, f. κλά-ειν to break) + -ic.]
A. adj.
1. Optics. Pertaining to refraction; produced by refraction through a medium of different density.
1796Hutton Math. Dict., Anaclastic Curves, a name given by M. de Mairan to certain apparent curves formed at the bottom of a vessel full of water..or the vault of the heavens, seen by refraction through the atmosphere. 1879Syd. Soc. Lex., Anaclastic, applied to that point where a luminous ray is refracted.
2. Springing back with a crackling sound; as in anaclastic glasses (see quot.).
1753Chambers Cycl. Supp., Anaclastic glasses are a low kind of phials with flat bellies, resembling inverted funnels, whose bottoms are very thin..and..a little convex. But upon applying the mouth to the orifice, and gently..sucking out the air, the bottom gives way with a horrible crack, and of convex becomes concave. On the contrary upon.. breathing gently into the orifice, the bottom with no less noise bounds back to its former place. 1815Encycl. Brit. II. 166 Anaclastic Glasses, a kind of sonorous phials or glasses, chiefly made in Germany.
3. Pros. Of, pertaining to, or involving anaclasis.
1889in Cent. Dict. 1912J. W. White Verse Gr. Comedy viii. 185 Normal and anaclastic metres may correspond in strophe and antistrophe. 1949Oxf. Classical Dict. 566/2 The hypodochmius, or ‘anaclastic’ dochmius, inverts the first two elements, –˘–˘–. 1957W. Beare Latin Verse & Europ. Song vii. 83 Ionic Verse (a minore ˘˘––, a maiore ––˘˘)..is..highly emotional, particularly in its ‘anaclastic’ or ‘broken’ form (˘˘–˘–˘––).
B. n. [Cf. acoustics.] The part of optics which treats of refraction; dioptrics.
1696Phillips, Anaclatics, a part also of Opticks which by the Lines of the Stars, and other visual Objects, refracted in a medium of a different thickness, measures their figures, magnitudes, distances, etc. [So spelt and defined in Bailey, Johnson, Ash.] 1789Howard Encycl., Anaclastics. |