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bot·tom / ˈbätəm/ • n. (usu. the bottom) 1. the lowest point or part: the bottom of the page. ∎  the lower surface of something: place the fruit on the bottom of the dish. ∎  the part on which a thing rests; the underside: he sat on the bottom of an upturned bucket. ∎  the ground under a sea, river, or lake: the liner plunged to the bottom of the sea. ∎  the seat of a chair. ∎  the lowest position in a competition or ranking: he started at the bottom and now has his own business. ∎  the basis or origin: there's a mad scientist at the bottom of it all. ∎  (also bottoms) the lower half of a two-piece garment: pajama bottoms a skimpy bikini bottom. ∎  the lowest part of the hull of a ship, esp. the relatively flat portion on either side of the keel. 2. inf. the buttocks: he climbs the side of the gorge, scratching his bottom unselfconsciously. 3. Baseball the second half of an inning: the bottom of the ninth. 4. Physics one of six flavors of quark. • adj. in the lowest position: the books on the bottom shelf. ∎  in the lowest or last position in a competition or ranking: households in the bottom income bracket. • v. [intr.] (of a performance or situation) reach the lowest point before stabilizing or improving: interest rates have bottomed out. PHRASES: at bottom basically; fundamentally: at bottom, science is exploration. bet your bottom dollar inf. stake everything: you can bet your bottom dollar it'll end in tears. the bottom falls (or drops) out collapse or failure occurs: the bottom fell out of the market for classic cars. from the bottom up 1. completely and thoroughly: Paul understands me from the bottom up. 2. by progressing from a lower or more fundamental starting point: we began to study history from the bottom up. get to the bottom of find an explanation for (a mystery): he hopes to get to the bottom of the scam.DERIVATIVES: bot·tomed adj. [in comb.] a glass-bottomed boat. bot·tom·most / -ˌmōst/ adj.

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bottomhansom, ransom, Ransome, transom •Wrexham • sensum • Epsom • jetsam •lissom • winsome • gypsum • alyssum •blossom, opossum, possum •flotsam • awesome • balsam • Folsom •noisome • twosome •fulsome • buxom • Hilversum •irksome • Gresham • meerschaum •petersham • nasturtium •atom, Euratom •factum •bantam, phantom •sanctum •desideratum, erratum, post-partum, stratum •substratum • rectum • momentum •septum •datum, petrolatum, pomatum, Tatum, ultimatum •arboretum • dictum • symptom •ad infinitum •bottom, rock-bottom •quantum •autumn, postmortem •factotum, Gotham, scrotum, teetotum, totem •sputum •accustom, custom •diatom • anthem • Bentham • Botham •fathom • rhythm • biorhythm •algorithm • logarithm • sempervivum •ovum • William

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A. lowest surface or part OE.; valley, dell (surviving in place-names); foundation XV;

B. keel of ship, hull XVI. OE. botm = OS. bodom (Du. bodem), corr. with variation of suffix to ON. botn, and parallel to OE. bodan, corr. to OHG. bodam (G. boden ground, earth) :- Gmc. *bubm- *buþn :- IE. *bhudhm(e)n-, f. *bhudh-, whence also L. fundus, Skr. budhná-, Sense B is from Du.