Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
An act of irradiating, or state of being irradiated.
a process of sterilization whereby radiation is passed through a bag containing food, utensils, etc., to sterilize the contents.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
An act of irradiating, or state of being irradiated.
Synonym of radiotherapy.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Synonyms: radiotherapy
Antonyms: none provided
noun
illumination; irradiance; brilliance.
Definition source: English Wiktionary via Wiktextract
Usage: countable, obsolete, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
mental light or illumination.
Definition source: English Wiktionary via Wiktextract
Usage: countable, figuratively, obsolete, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
The apparent enlargement of a bright object seen upon a dark ground, due to the fact that the portions of the retina around the image are stimulated by the intense light; as when a dark spot on a white ground appears smaller, or a white spot on a dark ground larger, than it really is, especially when a little out of focus.
Definition source: English Wiktionary via Wiktextract
Usage: countable, obsolete, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: radiotherapy, radiation therapy, radiation, actinotherapy
Antonyms: none provided
Broader terms: therapy
Narrower terms: phototherapy, radium therapy, Curietherapy, X-ray therapy
noun
(Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: generalization, generalisation, stimulus generalization, stimulus generalisation
noun
the apparent enlargement of a bright object when viewed against a dark background
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: illusion, semblance
noun
(physiology) the spread of sensory neural impulses in the cortex
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: spread, spreading
noun
a column of light (as from a beacon)
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: beam, beam of light, light beam, ray, ray of light, shaft, shaft of light
Antonyms: none provided
Broader terms: light, visible light, visible radiation
Narrower terms: heat ray, high beam, moonbeam, moon ray, moon-ray, sunbeam, sunray, laser beam, low beam
noun
the condition of being exposed to radiation
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: condition, status
History
From Middle French irradiacion, from Latin irradiatio. Morphologically irradiate + -ion.
Across languages
31 source translations are retained for this English entry.
