English
simultaneous
Simultaneous comes from Medieval Latin simultaneus ‘acting together’, from Latin simul ‘at the same time’, and ultimately from Proto-Indo-European *sem- ‘one, whole’.
- Proto-Indo-Europeanc. 4500–2500 BCE*sem-‘one, whole’root as named
- Latinc. 75 BCE–200 CEsimul‘at the same time’
- Latin, derivedc. 75 BCE–200 CEsimultās‘a coming together, convergence or intersection’
- Medieval Latinc. 600–1500simultaneus‘acting together’
- Englishearliest quotation 1992simultaneous
attested reconstructed ? uncertain or disputed
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*sem-‘one, whole’root as named
- Latinc. 75 BCE–200 CEsimul‘at the same time’
- Latin, derivedc. 75 BCE–200 CEsimultās‘a coming together, convergence or intersection’
- Medieval Latinc. 600–1500simultaneus‘acting together’
- Englishearliest quotation 1992simultaneous
Earliest quotation: 1992, Rudolf Mathias Schuster, Chicago: “As with the Lejeuneaceae, this pattern of massive speciation…”
Linked words
through Proto-Indo-European *sem- ‘one, whole’
some, same, single, seem, similar, simple, simply, soft, sam, sincerely, resemble, assemble, resemblance, singular, simulation, anomaly, sincerity, semblance, assimilate, synapse, homology, homeopathic, hyphen, anomalous, insincere, sempre, simile, synchronise, homolog, simulacrum, 47 more
through Latin simul ‘at the same time’
Today it means
adj Happening at the same moment.
Language periods are conventional ranges, not dates for this word.
Etymograph / Proto-Indo-European *sem- / simultaneous