| 释义 |
▪ I. theine, n. Chem.|ˈθiːaɪn|
Also † ˈtheina.
[f. mod.L. thea tea + -ine5.]
A vegetable alkaloid, originally thought to be a principle peculiar to tea, but found to be identical with caffeine.
1838T. Thomson Chem. Org. Bodies 295 Oudry has..announced that he has discovered in tea a salifiable basis, to which he has given the name of theina. 1842Penny Cycl. XXIV. 304/2 Thein, or Theina, the peculiar principle of tea. 1853Ure Dict. Arts II. 834 Theine was obtained from coffee by the same process slightly altered. 1863–72Watts Dict. Chem. I. 707 Oudry.., in 1827, found in tea a crystalline substance, which he called theine. 1881A. Griffith in Science Gossip No. 203. 248 Tea contains from a half to five per cent. of theine.
▪ II. † theine, theign, v. Obs.
Forms: 1–2 þeᵹnian (1 ðæᵹn-), þénian, 2 þeiᵹnen, 3 þæinen, þeine(n.
[OE. þeᵹnian, f. þeiᵹn, thane = ON. þegna, OHG. deganôn:—OTeut. *þegnôjan, f. *þegnoz thane.]
intr. To be a servant or minister, to perform the duties of an office. With dat.: To minister to, wait or attend upon, serve. (a person); hence, quasi-trans.
Beowulf 561 Ic him þenode deoran sweorde swa hit ᵹedefe wæs. a900tr. Bæda's Hist. iii. xvii. [xxiii.] (1890) 232 Þa he ða moniᵹ ᵹer..biscophad þeᵹnade. 971Blickl. Hom. 33 He wæs soþ God, þe him englas þeᵹnedon. c975Rushw. Gosp. Matt. viii. 15 Hiu aras & ðæᵹnade heom. c1000Ags. Gosp. ibid., Ða aras heo & þenode him. c1160Hatton Gosp. ibid., Þa aras hyo & þeiᵹnede hym. a1175Cott. Hom. 239 Mid al þan þe..laȝelice her him þenið. c1175Lamb. Hom. 109 Vnwurðe bið þe on elde þet him oðer men þenien. c1205Lay. 24595 Þer weoren a þusen cnihtes bald..þat þeineden þan kinge. Ibid. 24621 A þusend hire eode biuore..to þæinen þere quene. a1225St. Marher. 23 Þeos þreo in an iþeinet of engles. a1250Prov. ælfred 499 in O.E. Misc. 132 Loke þat þu him þeine mid alle þeuues þines.
Hence † theining (þeiᵹnung, þening), ministration, service, office.
c888K. ælfred Boeth. xxxvii. §1 ᵹif him mon þonne awint of þa claþas, & him oftihð þara þenunga & þæs anwealdes. a900tr. Bæda's Hist. ii. xiv. [xvi.] (1890) 144 Næniᵹ..hrinan dorste ne ne wolde buton his nedþearflicre þeᵹnunge. 971Blickl. Hom. 209 Englas beoð to ðeᵹnunge gæstum fram Gode hider on world sended. c1000Ags. Gosp. Matt. xxvi. 19 Hiᵹ ᵹe-ᵹearwodon him easter-þenunga. a1175Cott. Hom. 233 His water [us werpð] drench and fiscynn his fer manifeald þeninge. |