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positive US English

Consisting in or characterized by the presence or possession of features or qualities rather than their absence

positive US Thesaurus

a positive response

HIV-positive US English

Having had a positive result in a blood test for the AIDS virus HIV

positive law US English

Statutes that have been laid down by a legislature, court, or other human institution and which can take whatever form the authors want

positive pole US English

A north-seeking pole of a magnet

positive sign US English

Another term for plus sign.

false positive US English

A test result which incorrectly indicates that a particular condition or attribute is present

positive logic US English

A method using electrical signals to represent binary digits, in which the positive signal is taken to represent 1 and the negative signal 0

positive organ US English

A large but movable pipe organ

proof positive US English

Evidence taken to be final or absolute proof of the existence of something

Rhesus-positive US English

Having the Rhesus factor

positive feedback US English

The enhancement or amplification of an effect by its own influence on the process that gives rise to it

positive pressure US English

Air or gas pressure greater than that of the atmosphere, as used, e.g., in the artificial ventilation of the lungs

positive vetting US English

A process of exhaustive inquiry into the background and character of a candidate for a civil service post that involves access to secret material

positive geotropism US English

The tendency of roots to grow downward

positive reinforcement US English

The process of encouraging or establishing a pattern of behaviour by offering reward when the behaviour is exhibited

positive discrimination US English

British term for reverse discrimination.

test1 US English

Produce a specified result in a medical test, especially a drug test or AIDS test

Gram stain US English

A staining technique for the preliminary identification of bacteria, in which a violet dye is applied, followed by a decolorizing agent and then a red dye. The cell walls of certain bacteria (denoted Gram-positive) retain the first dye and appear violet, while those that lose it (denoted Gram-negative) appear red. Also called Gram’s method

seropositive US English

Giving a positive result in a test of blood serum, e.g., for the presence of a virus

phototaxis US English

The bodily movement of a motile organism in response to light, either toward the source of light (positive phototaxis) or away from it (negative phototaxis)

phototropism US English

The orientation of a plant or other organism in response to light, either toward the source of light (positive phototropism) or away from it (negative phototropism)

positive prescription in prescription US English

The establishment of a claim founded on the basis of a long or indefinite period of uninterrupted use or of long-standing custom

Gram-positive in Gram stain US English

A staining technique for the preliminary identification of bacteria, in which a violet dye is applied, followed by a decolorizing agent and then a red dye. The cell walls of certain bacteria (denoted Gram-positive) retain the first dye and appear violet, while those that lose it (denoted Gram-negative) appear red. Also called Gram’s method

Gram-positive in Gram stain New Oxford Dictionary for Writers & Editors

technique for distinguishing between two categories of bacteria (Gram-positive and Gram-negative)

positive geotropism in geotropism US English

The growth of the parts of plants with respect to the force of gravity. The upward growth of plant shoots is an instance of negative geotropism; the downward growth of roots is positive geotropism

positive phototaxis in phototaxis US English

The bodily movement of a motile organism in response to light, either toward the source of light (positive phototaxis) or away from it (negative phototaxis)

positive phototropism in phototropism US English

The orientation of a plant or other organism in response to light, either toward the source of light (positive phototropism) or away from it (negative phototropism)


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