a combining form meaning "first," "foremost," "earliest form of," used in the formation of compound words (protomartyr; protolithic; protoplasm), specialized in chemical terminology to denote the first of a series of compounds, or the one containing the minimum amount of an element.
Also, esp. before a vowel, prot-.
[ < Gk, comb. form repr. prôtos FIRST, superl. formed from pró; see PRO2-]

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Universalium. 2010.

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  • Proto 2 — is the name of the $55 million initiative of the Defense Advanced Research Projects Agency, or DARPA, to create a thought controlled prosthetic arm. Its predecessor was called Proto 1 and was capable of reasonably complicated movements like… …   Wikipedia

  • proto — Element de compunere care înseamnă primul , întâiul şi care serveşte la formarea unor substantive. – Din ngr. protos, fr. proto . Trimis de ana zecheru, 19.04.2004. Sursa: DEX 98  PROTO Element prim de compunere savantă cu semnificaţia: 1.… …   Dicționar Român

  • proto- — [prōt′ō, prōt′ə] [Gr prōto < prōtos, first < IE * pṛto < base * pro , early, ahead > L pro , Gr pro ] combining form 1. first in time, original, primitive [protoplast] 2. first in importance, principal, chief [protonotary] 3. [P ]… …   English World dictionary

  • proto- — pref. Elemento que significa primeiro.   • Nota: É seguido de hífen quando o segundo elemento começa por vogal, h, r ou s (ex.: proto árico, proto história, proto revolucionário, proto sulfureto) …   Dicionário da Língua Portuguesa

  • Proto® — /prōˈtō/ (S Afr) noun The name of a type of breathing apparatus used in mine rescues Proto team or proto team noun A team of people trained to deal with underground rescues, etc …   Useful english dictionary

  • proto- — Prefijo que significa primero. Medical Dictionary. 2011 …   Diccionario médico

  • proto- — [dal gr. prō̂tos primo , in composizione prōto ]. 1. Primo elemento di molte parole composte, che significa primo in ordine di tempo o di spazio (protocanonico, protomartire ), o in ordine d importanza (protomedico, protonotaro ). 2. Sign. partic …   Enciclopedia Italiana

  • proto- — [prəutəu, tə US proutou, tə] prefix [: Late Latin; Origin: Greek, from protos first ] technical existing or coming before other things of the same type ▪ a proto fascist group ▪ a prototype …   Dictionary of contemporary English

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