Meanings
- not comparableHappening at the same moment.
As with the Lejeuneaceae, this pattern of massive speciation appears to be correlated with the Cretaceous explosion of the angiosperms and the simultaneous creation of a host of new microenvironments, differing in humidity, light intensity, texture, etc.
1992, Rudolf M[athias] Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, Chicago, Ill.: Field Museum of Natural History, →ISBN, pages 3-4 - not comparablemathematicsTo be solved for the same values of variables.
Synonyms & antonyms
antonym(s) of “happening at the same moment”
adjectiveoccurring or operating at the same time
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- Latinsimul“together, at the same time”
- Medieval Latinsimultaneus
- Englishsimultaneous
From Medieval Latin simultaneus, from simultim (“at the same time, extended”), from Latin simul (“together, at the same time”); compare similar.
More words from Medieval Latin, Latin
Full word history & related roots →Translations
Arabic مُتَزَامِن
- مُتَزَامِن (mutazāmin)occurring at the same time
Bulgarian едновременен
- едновременен (ednovremenen)occurring at the same time
Catalan simultani
- simultanioccurring at the same time
Chinese Mandarin 同時 /同时
- 同時 /同时 (tóngshí)occurring at the same time
Czech současný, souběžný
- současnýoccurring at the same time
- souběžnýoccurring at the same time
Danish samtidig
- samtidigoccurring at the same time
Dutch gelijktijdig, simultaan
- gelijktijdigoccurring at the same time
- simultaanoccurring at the same time
Esperanto samtempa
- samtempaoccurring at the same time
Finnish samanaikainen, yhteinen (but see yhtälöryhmä)
- samanaikainenoccurring at the same time
- yhteinen (but see yhtälöryhmä)mathematics
French simultané
- simultanéoccurring at the same time
German gleichzeitig, simultan
- gleichzeitigoccurring at the same time
- simultanoccurring at the same time
Greek ταυτόχρονος
- ταυτόχρονος (taftóchronos)occurring at the same time
Hungarian egyidejű, szimultán
- egyidejűoccurring at the same time
- szimultánoccurring at the same time
Indonesian bersamaan
- bersamaanoccurring at the same time
Italian simultaneo, concomitante
- simultaneooccurring at the same time
- concomitanteoccurring at the same time
Japanese 同時の
- 同時の (dōji no)occurring at the same time
Korean 동시적인
- 동시적인 (dongsijeogin)occurring at the same time
Latin contemporāneus, simultāneus
- contemporāneusoccurring at the same time
- simultāneusoccurring at the same time
Malay serentak, serentak
- serentakoccurring at the same time
- serentakmathematics
Māori tautokorua, tukutahi
- tautokoruaoccurring at the same time
- tukutahioccurring at the same time
- ngātahioccurring at the same time
- ngātatahioccurring at the same time
- tahioccurring at the same time
Norwegian samtidig, samstundes
- samtidigoccurring at the same time
- samstundesoccurring at the same time
Polish równoczesny, jednoczesny
- równoczesnyoccurring at the same time
- jednoczesnyoccurring at the same time
Portuguese simultâneo
- simultâneooccurring at the same time
Russian одновре́ме́нный, синхро́нный
- одновре́ме́нный (odnovréménnyj)occurring at the same time
- синхро́нный (sinxrónnyj)occurring at the same time
Scottish Gaelic co-amail
- co-amailoccurring at the same time
Spanish simultáneo
- simultáneooccurring at the same time
Swedish samtidig
- samtidigoccurring at the same time
Tagalog santaknain
- santaknainoccurring at the same time
Ukrainian одноча́сний
- одноча́сний (odnočásnyj)occurring at the same time
Rhymes & wordplay
Rhymes with simultaneous
Cite this entry
simultaneous. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/simultaneous
“simultaneous.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/simultaneous. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “simultaneous,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/simultaneous.
Source: simultaneous on Wiktionary, CC BY-SA 4.0.