adderとは

意味・読み方・使い方

発音

• (米国発音) IPA^(key): /ˈædɚ/
• 韻: -ædə(ɹ)

語源 1

From Middle English nadder, addere, rebracketing of “a naddere” as “an addere”, from 古期英語 nǣdre, nǣddre (“snake, serpent, viper, adder”), from Proto-Germanic *nadrǭ (“snake, viper”) (compare West Frisian njirre, Dutch adder, German Natter, Otter), from pre-Germanic *néh₁treh₂, variant of Proto-Indo-European *n̥h₁trih₂ (compare Welsh neidr, Latin natrīx (“watersnake”)), from *(s)neh₁- (“to spin, twist”) (compare Dutch naaien).

別の表記

• edder (dialectal)

名詞

adder (複数形 adders)

1. (obsolete) Any snake.
   • 1610-11, William Shakespeare, The Tempest, Act II Scene 2

     CALIBAN:

     [...]

     His spirits hear me,

     And yet I needs must curse. But they'll nor pinch

     Fright me with urchin-shows, pitch me i'th' mire,

     Nor lead me like a firebrand in the dark

     Out of my way, unless he bid 'em; but

     For every trifle are they set upon me,

     Sometimes like apes that mow and chatter at me,

     And after bite me; then like hedgehogs, which

     Lie tumbling in my barefoot way, and mount

     Their pricks at my footfall; sometimes am I

     All wound with adders, who with their cloven tongues

     Do hiss me into madness—

     [...]

2. A name loosely applied to various snakes more or less resembling the viper; a viper.
   1. (chiefly Britain) A small venomous serpent of the genus Vipera
      • 2021 August 25, Nick Brodrick, “Flourishing Flora and Fauna”, in RAIL, number 938, page 51:

        These include the county's [Cumbria's] only venomous snake - the adder - which relies on exposed elements to successfully breed its young.

      1. The common European adder (Vipera berus).
   2. The puff adders, of Africa (genus Bitis).
   3. (US, Canada) Any of several small nonvenomous snakes resembling adders
      1. Lampropeltis triangulum (milk snake).
      2. Heterodon spp. (hog-nosed snakes), a genus of harmless colubrid snakes found in North America
   4. Certain venomous snakes resembling other adders
      1. Acanthophis spp. (death adders), elapid snakes found in Southeast Asia and Australia
      2. Agkistrodon contortrix mokasen, the northern copperhead, a venomous viper found in the eastern United States
   5. A sea stickleback or adder fish (Spinachia spinachia).

派生語

• adder fish
• death adder
• puff adder (Bitis arietans)

語源 2

From add +‎ -er.

名詞

adder (複数形 adders)

1. Someone who or something which performs arithmetic addition; a machine for adding numbers.
2. An electronic device that adds voltages, currents or frequencies.
3. Something which adds or increases.

   They sought out cost adders with an eye toward eliminating them.

派生語

• carry-lookahead adder
• carry-save adder
• carry-skip adder
• full adder
• half adder

Further reading

• adder on Wikipedia.

アナグラム

• dared, dread, radde, re-add, readd