| APOPROTEIN | • apoprotein n. (Biochemistry) The polypeptide part of a conjugated protein; for example, an apolipoprotein plus a lipid… • APOPROTEIN n. the protein component of a conjugated protein.
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| APPOINTORS | • appointors n. Plural of appointor. • APPOINTOR n. a person who is given (by the owner) the power to appoint property to other persons.
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| APPORTIONS | • apportions v. Third-person singular simple present indicative form of apportion. • APPORTION v. to portion out.
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| BUPROPIONS | • BUPROPION n. an antidepressant drug used in the treatment of nicotine addiction. | 
| LIPOTROPIN | • lipotropin n. (Biochemistry) A pituitary hormone that promotes the metabolism of fat, and is a precursor to the endorphins. • LIPOTROPIN n. a protein hormone of the pituitary gland.
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| OPPRESSION | • oppression n. The exercise of authority or power in a burdensome, cruel, or unjust manner. • oppression n. The act of oppressing, or the state of being oppressed.
 • oppression n. A feeling of being oppressed.
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| PORNOTOPIA | • pornotopia n. A fantasy world in which everyone is ready and willing to indulge in all kinds of sexual activity. • PORNOTOPIA n. a perfect setting for the antics of pornography.
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| PORPOISING | • porpoising v. Present participle of porpoise. • PORPOISE v. to move like a porpoise; specifically (of an aircraft, esp. a seaplane) to touch the water or ground and rise again.
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| POSTPRISON | • postprison adj. After release from prison. • postprison adv. After release from prison.
 • POSTPRISON adj. after release from prison.
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| POURPOINTS | • pourpoints n. Plural of pourpoint. • POURPOINT n. (French) a mediaeval quilted doublet.
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| PREOPTIONS | • preoptions n. Plural of preoption. • PREOPTION n. the right of first choice.
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| PREPORTION | • preportion v. To divide into individual portions before use. • pre-portion v. Alternative form of preportion.
 • PREPORTION v. to portion in advance.
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| PRONEPHROI | • pronephroi n. Plural of pronephros. • PRONEPHROS n. a primitive kidney that disappears early in embryonic development.
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| PROPENSION | • propension n. (Archaic) Propensity. • PROPENSION n. (Shakespeare) inclination, propensity.
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| PROPIONATE | • propionate n. (Organic chemistry) Any salt or ester of propionic acid. • PROPIONATE n. a salt of propionic acid.
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| PROPORTION | • proportion n. (Countable) A quantity of something that is part of the whole amount or number. • proportion n. (Uncountable) Harmonious relation of parts to each other or to the whole.
 • proportion n. (Countable) Proper or equal share.
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| PROPULSION | • propulsion n. The action of driving or pushing, typically forward or onward; a propulsive force or impulse. • PROPULSION n. the act of propelling.
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| PROTANOPIA | • protanopia n. (Pathology) A form of color blindness. Involves a defect in distinguishing between red and green. • PROTANOPIA n. colour-blindness with respect to red.
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| PROTANOPIC | • protanopic adj. Exhibiting or relating to protanopia. • PROTANOPIC adj. colour-blind to red.
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| REOPPOSING | • reopposing v. Present participle of reoppose. • REOPPOSE v. to oppose again.
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