float

• vt.浮かせる；練習する
• vi.浮く；漂う、広がる；揺れる；実践する
• n. カラーカー、フロート; ドリフター; ポンツーンボート; フローター
• n. （フロート）人名; （英）Flot.

PIE*pleuから、浮く、浮かぶ、語源的にはfleet, float, pluvialと同じ。 経済学の名詞 stock issueなどにも使われる。

float

float: [OE] Germanic *fleut-, which produced English fleet, had the so-called ‘weak grades’ (that is, variant forms which because they were weakly stressed had different vowels) *flot- and *flut-. The former was the source of Germanic *flotōjan, which passed into late Old English as flotian and eventually ousted flēotan (modern English fleet) from its original meaning ‘float’.

It also seems to have been borrowed into the Romance languages, producing French flotter, Italian fiottare, and Spanish flotar (a diminutive of the Spanish noun derivative flota gave English flotilla [18]). The latter formed the basis of Old Norse flytja, acquired by English as flit [12], and of Old English floterian, which became modern English flutter.
=> fleet, flit, flotilla, flutter

float (v.)

late Old English flotian "to rest on the surface of water" (intransitive; class II strong verb; past tense fleat, past participle floten), from Proto-Germanic *flotan "to float" (cognates: Old Norse flota, Middle Dutch vloten, Old High German flozzan, German fl?ssen), from *flot-, from PIE *pleud-, extended form of root *pleu- "to flow" (see pluvial).

Meaning "drift about, hover passively" is from c. 1300. Transitive sense of "to lift up, cause to float" (of water, etc.) is from c. 1600; that of "set (something) afloat" is from 1778 (originally of financial operations). Of motion through air, from 1630s. Meaning "hover dimly before the eyes" is from 1775. Related: Floated; floating. A floating rib (by 1802) is so called because the anterior ends are not connected to the rest.

float (n.)

apparently an early Middle English merger of three related Old English nouns, flota "boat, fleet," flote "troop, flock," flot "body of water, sea;" all from the source of float (v.). The early senses were the now-mostly-obsolete ones of the Old English words: "state of floating" (early 12c.), "swimming" (mid-13c.); "a fleet of ships; a company or troop" (c. 1300); "a stream, river" (early 14c.). From c. 1300 as an attachment for buoyancy on a fishing line or net; early 14c. as "raft." Meaning "platform on wheels used for displays in parades, etc." is from 1888, probably from earlier sense of "flat-bottomed boat" (1550s). As a type of fountain drink, by 1915.

Float.--An ade upon the top of which is floated a layer of grape juice, ginger ale, or in some cases a disher of fruit sherbet or ice cream. In the latter case it would be known as a "sherbet float" or an "ice-cream float." ["The Dispenser's Formulary: Or, Soda Water Guide," New York, 1915]

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Few soda water dispensers know what is meant by a "Float Ice Cream Soda." This is not strange since the term is a coined one. By a "float ice cream soda" is meant a soda with the ice cream floating on top, thus making a most inviting appearance and impressing the customer that you are liberal with your ice cream, when you are not really giving any more than the fellow that mixes his ice cream "out of sight." ["The Spatula," Boston, July, 1908]

1. A fresh egg will sink and an old egg will float .

新鮮な卵は沈み、新鮮ではないものは浮いてしまう。

2.Empty things float .

空の物体が水の中で浮き上がる。

3.Strange thoughts float through my mind when I am nearly asleep.

私は眠りそうになったときに奇妙な考えを抱いた。

4.When you 're tired of swimming，just float for a while.

泳ぎ疲れたらしばらく浮かべて。

5.When a fish bites the hook，the float bobs.

魚が釣られると、魚が浮き上がったり下がったりする。