Usually means: Operator, especially in mathematical contexts.
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We found 10 dictionaries that define the word oper:

General (6 matching dictionaries)
  1. Oper, oper: Wordnik
  2. oper: Wiktionary
  3. OPer: Infoplease Dictionary
  4. oper, oper: Dictionary.com
  5. Oper: Wikipedia, the Free Encyclopedia
  6. Oper (f): AllWords.com Multi-Lingual Dictionary

Art (1 matching dictionary)
  1. oper-: A Cross Reference of Latin and Greek Elements

Miscellaneous (2 matching dictionaries)
  1. OPER: Acronym Finder
  2. AbbreviationZ (No longer online)

Slang (1 matching dictionary)
  1. oper: Urban Dictionary

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Definitions from Wiktionary (oper)

▸ noun:  (Internet) A network operator on IRC.

Similar:
IRCop, half-op, opping, chanop, chop, room, userlist, internerd, ident, botosphere, more...

Types:
add, subtract, multiply, divide, exponentiate, square root, cube root, modulo, more...

Phrases:
Deutsche Oper Berlin, Oper Frankfurt, Alte Oper, modus oper, more...

Adjectives:
total, other, net, integral, military, tax, die, lnstitutional, inflow, normal, salary

▸ Words similar to oper

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▸ Idioms related to oper

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▸ Rhymes of oper

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Similar:
IRCop, half-op, opping, chanop, chop, room, userlist, internerd, ident, botosphere, more...

Types:
add, subtract, multiply, divide, exponentiate, square root, cube root, modulo, more...

Phrases:
Deutsche Oper Berlin, Oper Frankfurt, Alte Oper, modus oper, more...

Adjectives:
total, other, net, integral, military, tax, die, lnstitutional, inflow, normal, salary



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