theoria

Latin

Etymology tree

Proto-Hellenic *tʰáwā

Ancient Greek θέᾱ (théā)

Proto-Indo-European *wer-der.

Proto-Indo-European *h₃ekʷ-der.

Proto-Indo-European *weyd-der.

Ancient Greek ὁράω (horáō)

Ancient Greek *θεᾱ-(ϝ)ορός, *θεη-(ϝ)ορός (*theā-(w)orós, *theē-(w)orós)

Ancient Greek θεωρός (theōrós)

Proto-Indo-European *-h₂

Proto-Indo-European *-éh₂

Proto-Indo-European *-i-eh₂

Proto-Hellenic *-íā

Ancient Greek -ῐ́ᾱ (-ĭ́ā)

Ancient Greek θεωρία (theōría)bor.

Latin theōria

theōria f (genitive theōriae); first declension

→ Catalan: teoria
→ Czech: teorie
→ Dutch: theorie
- → Indonesian: teori
→ Finnish: teoria
→ Middle French: theorie [1380]
- French: théorie
  - → Romanian: teorie
- → English: theory
→ Italian: teoria [from 17th c.]^[1]
→ Galician: teoría
→ German: Theorie [first in the 16th c. as theoria]^[2]
→ Old Irish: teöir, teüir
- Middle Irish: téoir
  - Irish: teoir
→ Occitan: teoria
→ Polish: teoria
→ Portuguese: teoria
→ Spanish: teoría
→ Esperanto: teorie

“theoria”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press
"theoria", in Charles du Fresne du Cange, Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
“theoria”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.
“theoria”, in Harry Thurston Peck, editor (1898), Harper’s Dictionary of Classical Antiquities, New York: Harper & Brothers
“theoria”, in William Smith et al., editor (1890), A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin

^ Francesco Sabatini, Vittorio Coletti. Il Sabatini Coletti. Dizionario di Italiano. Rizzoli Larousse, 2003, s.v.
^ “Theorie”, in Digitales Wörterbuch der deutschen Sprache‎^[1] (in German)

theoria f (plural theorias)

pre-reform spelling (used until 1943 in Brazil and 1911 in Portugal) of teoria