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.
Sound
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noun
The use of light to treat disorders of the skin, and certain mood disorders.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
the use of strong light to treat acne or hyperbilirubinemia of the newborn
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: radiotherapy, radiation therapy, radiation, actinotherapy, irradiation
History
Etymology tree Proto-Indo-European *bheh2- Proto-Indo-European *bhéh2os Proto-Hellenic *pháwos Ancient Greek φᾰ́ος (phắos) Ancient Greek φῶς (phôs) Ancient Greek φωτο- (phōto-)der. English photo- Proto-Indo-European *treb-der.? Ancient Greek θερᾰ́πων (therắpōn) Ancient Greek -εύς (-eús) Ancient Greek -εύω (-eúō) Ancient Greek θεραπεύω (therapeúō) Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Proto-Indo-European *-i-eh2 Proto-Hellenic *-íā Ancient Greek -ία (-ía) Ancient Greek θεραπεία (therapeía)bor. New Latin therapīabor. English therapy English phototherapy From photo- + therapy.
Across languages
11 source translations are retained for this English entry.
