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List of 12-letter words containing •••••

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There are 17 twelve-letter words containing M, O, P and 3R

DEPROGRAMMER• deprogrammer n. One who deprograms.
• DEPROGRAMMER n. one who deprograms.
IMPROPRIATOR• impropriator n. (Archaic) A layperson in possession of ecclesiastical property.
• IMPROPRIATOR n. a layman who is in possession of a benefice or its revenues.
MICROGRAPHER• micrographer n. One who carries out micrography, describing things at the microscopic level.
• MICROGRAPHER n. a person who draws or describes microscopic objects.
MICROPROGRAM• microprogram n. (Computing) a set of microinstructions in a CPU, used to implement machine instructions.
• microprogram v. (Computing) to manually write a microprogram.
• MICROPROGRAM n. a routine composed of microinstructions used in microprogramming.
MISREPORTERS• misreporters n. Plural of misreporter.
• MISREPORTER n. one who misreports.
NONPERFORMER• nonperformer n. Someone who is not a performer.
• NONPERFORMER n. one who is not a performer.
OVERPROGRAMS• overprograms v. Third-person singular simple present indicative form of overprogram.
• OVERPROGRAM v. to program excessively.
PERFORMATORY• performatory adj. Synonym of performative.
• PERFORMATORY adj. of a statement or verb that itself constitutes the action described, also PERFORMATIVE.
PREPROGRAMED• preprogramed v. Simple past tense and past participle of preprogram.
• PREPROGRAM v. to program beforehand.
PROCEREBRUMS• PROCEREBRUM n. the forebrain, the prosencephalon.
PROTOMARTYRS• protomartyrs n. Plural of protomartyr.
• PROTOMARTYR n. the first martyr in any cause, esp. St Stephen.
REPROGRAMING• reprograming v. Present participle of reprogram.
• reprograming n. Alternative form of reprogramming.
• REPROGRAM v. to program again.
REPROGRAMMED• reprogrammed v. Simple past tense and past participle of reprogram.
• reprogrammed adj. That has been subject to reprogramming.
• REPROGRAM v. to program again.
REPROGRAMMES• reprogrammes v. Third-person singular simple present indicative form of reprogramme.
• REPROGRAMME v. to programme again, also REPROGRAM.
RESPIROMETER• respirometer n. A device used to measure the rate of respiration of living organisms, such as plants or fish.
• respirometer n. An apparatus for supplying air to a diver under water.
• RESPIROMETER n. an instrument for measuring and studying respiration.
RESPIROMETRY• respirometry n. A form of calorimetry that is used to measure the metabolic rate.
• RESPIROMETRY n. measurement by respirometer.
UNDERPERFORM• underperform v. To underachieve; to fail to reach standards or expectations, especially with respect to a financial investment.
• UNDERPERFORM v. to perform insufficiently.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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