precursor substance

См. также в других словарях:

• Precursor químico — Saltar a navegación, búsqueda Un precursor químico es una sustancia indispensable o necesaria para producir otra mediante una reacción química. Son los compuestos químicos que constituyen una primera etapa en un proceso químico y que actúan como… …   Wikipedia Español

• Substance dependence — Substance dependency Classification and external resources ICD 10 F10.2 F19.2 ICD 9 …   Wikipedia

• precursor — [prē kʉr′sər, prikʉr′sər; prē′kʉr΄sər] n. [L praecursor < praecurrere, to run ahead: see PRE & CURRENT] 1. a person or thing that goes before; forerunner; harbinger 2. a predecessor, as in office 3. a substance that precedes and is the source… …   English World dictionary

• Precursor — Forerunner. That which precedes or is derived from an available source. The term precursor is applied to an inactive substance converted to an active one (such as an enzyme, vitamin, or hormone). The term precursor applies to any chemical that is …   Medical dictionary

• Substance P — protein Name = tachykinin, precursor 1 caption = Spacefilling model of substance P width = 180 HGNCid = 11517 Symbol = TAC1 AltSymbols = TAC2, NKNA EntrezGene = 6863 OMIM = 162320 RefSeq = NM 003182 UniProt = P20366 PDB = ECnumber = Chromosome =… …   Wikipedia

• substance — Stuff; material. SYN: substantia [TA], matter. [L. substantia, essence, material, fr. sub sto, to stand under, be present] alpha s. SYN: reticular s. (1). anterior perforated s. [TA] a region at the base …   Medical dictionary

• precursor — noun Etymology: Middle English precursoure, from Latin praecursor, from praecurrere to run before, from prae pre + currere to run more at current Date: 15th century 1. a. one that precedes and indicates the approach of another b. predecessor 2. a …   New Collegiate Dictionary

• precursor — n. [L. prae, before; currare, to run] 1. Element or substance that preceeds the final one. 2. Ancestor or ancestral part; see anlage, rudiment …   Dictionary of invertebrate zoology

• precursor — noun 1》 a person or thing that comes before another of the same kind. 2》 a substance from which another is formed, especially by metabolic reaction. Derivatives precursory adjective Origin ME: from L. praecursor, from praecurs preceded , from… …   English new terms dictionary

• precursor — n. 1 a a forerunner. b a person who precedes in office etc. 2 a harbinger. 3 a substance from which another is formed by decay or chemical reaction etc. Etymology: L praecursor f. praecurrere praecurs (as PRAE , currere run) …   Useful english dictionary

• Oligodendrocy Precursor Cell — Oligodendrocyte Un oligodendrocyte L oligodendrocyte a un rôle essentiel dans la formation de la myéline au niveau du système nerveux central (la formation de la myéline au niveau du système nerveux périphérique étant assurée par les cellules de… …   Wikipédia en Français