photon (n.)

"unit of electromagnetic radiation," 1926, from photo- "light" + -on "unit." Related: Photonic.

also from 1926

Entries linking to photon

subatomic particle suffix, from ion.

word-forming element meaning "light" or "photographic" or "photoelectric," from Greek photo-, combining form of phōs (genitive phōtos) "light" (from PIE root *bha- (1) "to shine").

*bha- (1)

*bhā-, Proto-Indo-European root meaning "to shine."

It forms all or part of: aphotic; bandolier; banner; banneret; beacon; beckon; buoy; diaphanous; emphasis; epiphany; fantasia; fantasy; hierophant; pant (v.); -phane; phanero-; phantasm; phantasmagoria; phantom; phase; phene; phenetic; pheno-; phenology; phenomenon; phenyl; photic; photo-; photocopy; photogenic; photograph; photon; photosynthesis; phosphorus; phaeton; sycophant; theophany; tiffany; tryptophan.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit bhati "shines, glitters;" Greek phainein "bring to light, make appear," phantazein "make visible, display;" Old Irish ban "white, light, ray of light."

Trends of photon

adapted from books.google.com/ngrams/. Ngrams are probably unreliable.

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lead

"to guide," Old English lædan (transitive) "cause to go with oneself; march at the head of, go before as a guide, accompany and show the way; carry on; sprout forth, bring forth; pass (one's life)," causative of liðan "to travel," from Proto-Germanic *laidjanan (source also of Ol

phenomenon

1570s, "a fact directly observed, a thing that appears or is perceived, an occurrence," especially a regular kind of fact observed on certain kinds of occasions, from Late Latin phænomenon, from Greek phainomenon "that which appears or is seen," noun use of neuter present partici

talent

late 13c., "inclination, disposition, will, desire;" c. 1300, "feeling, emotion, passion," senses now obsolete, from Old French talent (12c.), from Medieval Latin talenta, plural of talentum "inclination, leaning, will, desire" (11c.), in classical Latin "balance, weight; sum of

algebra

"formal mathematics; the analysis of equations; the art of reasoning about quantitative relations by the aid of a compact and highly systematized notation," 1550s, from Medieval Latin algebra, from Arabic "al-mukhtasar fi hisab al-jabr wa al-muqabala" ("the compendium on calculat

shall

Old English sceal, Northumbrian scule "I owe/he owes, will have to, ought to, must" (infinitive sculan, past tense sceolde), from *skulanan, a common Germanic preterite-present verb (along with can, may, will), from Proto-Germanic *skul- (source also of Old Saxon sculan, Old Fris

zone

late 14c., from Latin zona "geographical belt, celestial zone," from Greek zōnē "a belt, the girdle worn by women at the hips," from zōnnynai "to gird," from PIE root *yos- "to gird" (source also of Avestan yasta- "girt," Lithuanian juosiu, juosti "to gird," Old Church Slavonic p

rapport

1660s, "reference, relation, relationship," from French rapport "bearing, yield, produce; harmony, agreement, intercourse," back-formation from rapporter "bring back; refer to," from re- "again" (see re-) + apporter "to bring," from Latin apportare "to bring," from ad "to" (see a

conniption

"attack of hysteria," 1833, in conniption fit, American English, origin uncertain; perhaps a fanciful formation related to corruption, which was used in a sense of "anger" from 1799, or from English dialectal canapshus "ill-tempered, captious," which probably is a corruption of c

remember

mid-14c., remembren, "keep or bear (something or someone) in mind, retain in the memory, preserve unforgotten," from Old French remembrer "remember, recall, bring to mind" (11c.), from Latin rememorari "recall to mind, remember," from re- "again" (see re-) + memorari "be mindful

lede

by 1965, alternative spelling of lead (n.2) in the newspaper journalism sense, to distinguish this specialized sense from other possible meanings of the written word, perhaps especially the molten lead (n.1) used in 20c. typesetting machines...."a people, nation, race; the subjec

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updated on May 28, 2020

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