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
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
No pronunciation record was provided for this word.
adj
Describing a point in the thermal spectrum of a system undergoing chemical reaction that does not change in intensity during the course of the reaction.
Definition source: English Wiktionary via Wiktextract
Topics: chemistry, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Etymology tree Ancient Greek ῐ̓́σος (ĭ́sos)lbor. English iso- Proto-Indo-European *h3ekw-der. Ancient Greek ὄπωπᾰ (ópōpă) Proto-Indo-European *-tós Proto-Hellenic *-tós Ancient Greek -τός (-tós) Ancient Greek ὀπτός (optós)der. English opto- Proto-Indo-European *h2eḱ- Proto-Indo-European *h2ew- Proto-Indo-European *-s Proto-Indo-European *h2ṓws Proto-Indo-European *-yéti Proto-Indo-European *h2ḱh2owsyéti Proto-Hellenic *akóuhō Ancient Greek ἀκούω (akoúō) Proto-Indo-European *-kos Proto-Hellenic *-kos Ancient Greek -κός (-kós) Ancient Greek -ῐκός (-ĭkós) Ancient Greek ᾰ̓κουστῐκός (ăkoustĭkós)bor. Medieval Latin acousticusbor. English acoustic English optoacoustic English isooptoacoustic From iso- + optoacoustic.
