| 单词 | root |
| 释义 | root root1 —rootlike, adj. /rooht, root/, n. 1. a part of the body of a plant that develops, typically, from the radicle and grows downward into the soil, anchoring the plant and absorbing nutriment and moisture. 2. a similar organ developed from some other part of a plant, as one of those by which ivy clings to its support. 3. any underground part of a plant, as a rhizome. 4. something resembling or suggesting the root of a plant in position or function: roots of wires and cables. 5. the embedded or basal portion of a hair, tooth, nail, nerve, etc. 6. the fundamental or essential part: the root of a matter. 7. the source or origin of a thing: The love of money is the root of all evil. 8. a person or family as the source of offspring or descendants. 9. an offshoot or scion. 10. Math. a. a quantity that, when multiplied by itself a certain number of times, produces a given quantity: The number 2 is the square root of 4, the cube root of 8, and the fourth root of 16. b. r th root, the quantity raised to the power 1/r: The number 2 is the 1/3 root of 8. c. a value of the argument of a function for which the function takes the value zero. 11. Gram. a. a morpheme that underlies an inflectional or derivational paradigm, as dance, the root in danced, dancer, or ten-, the root of Latin tendere "to stretch." b. such a form reconstructed for a parent language, as *sed-, the hypothetical proto-Indo-European root meaning "sit." 12. roots, a. a person's original or true home, environment, and culture: He's lived in New York for twenty years, but his roots are in France. b. the personal relationships, affinity for a locale, habits, and the like, that make a country, region, city, or town one's true home: He lived in Tulsa for a few years, but never established any roots there. c. personal identification with a culture, religion, etc., seen as promoting the development of the character or the stability of society as a whole. 13. Music. a. the fundamental tone of a compound tone or of a series of harmonies. b. the lowest tone of a chord when arranged as a series of thirds; the fundamental. 14. Mach. a. (in a screw or other threaded object) the narrow inner surface between threads. Cf. crest (def. 18), flank (def. 7). b. (in a gear) the narrow inner surface between teeth. 15. Australian Informal. an act of sexual intercourse. 16. Shipbuilding. the inner angle of an angle iron. 17. root and branch, utterly; entirely: to destroy something root and branch. 18. take root, a. to send out roots; begin to grow. b. to become fixed or established: The prejudices of parents usually take root in their children. v.i. 19. to become fixed or established. v.t. 20. to fix by or as if by roots: We were rooted to the spot by surprise. 21. to implant or establish deeply: Good manners were rooted in him like a second nature. 22. to pull, tear, or dig up by the roots (often fol. by up or out). 23. to extirpate; exterminate; remove completely (often fol. by up or out): to root out crime. [bef. 1150; (n.) ME; late OE rot < ON rot; akin to OE wyrt plant, WORT2, G Wurzel, L radix (see RADIX), Gk rhíza (see RHIZOME); (v.) ME roten, rooten, deriv. of the n.] Syn. 6. basis. 7. beginning, derivation, rise, fountainhead. 8. parent. 23. eradicate. root2 /rooht, root/, v.i. 1. to turn up the soil with the snout, as swine. 2. to poke, pry, or search, as if to find something: to root around in a drawer for loose coins. v.t. 3. to turn over with the snout (often fol. by up). 4. to unearth; bring to light (often fol. by up). [1530-40; var. of obs. wroot (OE wrotan, akin to wrot a snout)] root3 /rooht/ or, sometimes, /root/, v.i. 1. to encourage a team or contestant by cheering or applauding enthusiastically. 2. to lend moral support: The whole group will be rooting for him. [1885-90, Amer.; perh. var. of ROUT4] Syn. 1. cheer, applaud, boost, support. |
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