different between exchange vs pneumatophore

English

Pronunciation

• IPA^(key): /?ks?t?e?nd?/
• Rhymes: -e?nd?

Etymology 1

From Middle English eschaunge, borrowed from Anglo-Norman eschaunge, from Old French eschange (whence modern French échange), from the verb eschanger, from Vulgar Latin *excambi?re, present active infinitive of *excambi? (from Latin ex with Late Latin cambi?). Spelling later changed on the basis of ex- in English.

Noun

exchange (countable and uncountable, plural exchanges)

1. An act of exchanging or trading.

2. A place for conducting trading.

3. A telephone exchange.
4. (telephony, US) The fourth through sixth digits of a ten-digit phone number (the first three before the introduction of area codes).

5. A conversation.
6. (chess) The loss of one piece and associated capture of another
   1. (usually with "the") The loss of a relatively minor piece (typically a bishop or knight) and associated capture of the more advantageous rook
7. (obsolete) The thing given or received in return; especially, a publication exchanged for another.

   (Can we find and add a quotation of Shakespeare to this entry?)

8. (biochemistry) The transfer of substances or elements like gas, amino-acids, ions etc. sometimes through a surface like a membrane.
9. (finance) The difference between the values of money in different places.

Derived terms

Translations

Etymology 2

From Middle English eschaungen, from Anglo-Norman eschaungier, Old French eschanger, from the Old French verb eschangier, eschanger (whence modern French échanger), from Vulgar Latin *excambi?re, present active infinitive of *excambi? (from Latin ex with Late Latin cambi?). Gradually displaced native Old English wrixlan, wixlan (“to change, exchange, reciprocate”) and its descendants, wrixle being one of them.

Verb

exchange (third-person singular simple present exchanges, present participle exchanging, simple past and past participle exchanged)

1. (transitive) To trade or barter.

   I'll gladly exchange my place for yours.

2. (transitive) To replace with, as a substitute.

   I'd like to exchange this shirt for one in a larger size.

   Since his arrest, the mob boss has exchanged a mansion for a jail cell.

Synonyms

• (trade or barter): truck, wrixle; See also Thesaurus:trade or Thesaurus:barter
• (replace with a substitute): interchange, swap; See also Thesaurus:switch

Derived terms

Translations

Further reading

• exchange in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• exchange in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• exchange at OneLook Dictionary Search

English

Etymology

pneumato- +? -phore

Noun

pneumatophore (plural pneumatophores)

1. (zoology) A gas-filled sac or float of some colonial marine coelenterates, such as the Portuguese man-of-war.
2. (botany) An aerial root, in mangroves etc., specialized for gaseous exchange.
3. An apparatus consisting of a bag with a tube and mouthpiece, which may be attached to the body. The bag contains oxygen to be breathed by the wearer in rescue work in mines, etc.

Derived terms

• pneumatophorous