tetrakis-|ˈtɛtrəkɪs|formative element [f. Gr. τετράκις four times] used in Chem. in the names of compounds to signify four identical groups all substituted in the same way; formerly = tetra- 2.1850[see tri- 5 a].1912Jrnl. Chem. Soc. CI. 2003 The product obtained was tetrakisazobenzene, a deep red substance.1951Kirk & Othmer Encycl. Chem. Technol. VII. 580 Tetrakis(p-dimethylaminophenyl)hydrazine is dissociated to the extent of 10% in benzene solution and 21% in nitrobenzene.1963A. J. Hall Student's Handbk. Textile Sci. v. 259 The Proban flameproofing process is essentially based on the use of tetrakis-hydroxymethyl⁓phosphonium chloride.1979G. C. Barrett in D. N. Jones Comprehensive Organic Chem. III. xi. iv. 77 Tetra⁓kis(methylthio)methane, (MeS)₄C, undergoes exchange with dithiols.

tetrakis- /ˈtɛtrəkɪs/ prefix.

ORIGIN: Greek tetrakis four times.

Fourfold; spec. in Chemistry, forming names of compounds containing four groups identically substituted or coordinated. Cf. bis-, tris-.

DERIVATIVE tetrakis-hexaˈhedron noun, pl. -dra, -drons, = tetrahexahedron L19.

tetrakis-
combining form
Etymology: Greek, from tetrakis; akin to Greek tettares, tessares four — more at four
: four times : quadrupled — especially in complex chemical expressions
< tetrakis-(2-hydroxyethyl)-ammonium chloride (HOCH₂CH₂)₄NCl >

tetrakis-

Prefix

mathematics A variant of tetra-, used for multiplication with a second numerical prefix.
chemistry, obsolete A variant of tetra- used before vowels: tetrakisazobenzine
chemistry A variant of tetra-, used for substitutions of four complex rather than simple units, as in

tetrakis-(trichloromethyl)-benzene, benzene with four trichloromethyl groups attached,

tetrakis-hydroxymethyl~phosphonium chloride,

tetrakis(methylthio)methane, (MeS)₄C,

tetrakis(p-dimethylaminophenyl)hydrazine

Etymology

Greek τετράκις "four times"

Related terms

bis-

tris-

pentakis-

hexakis-

词汇	tetrakis-
词根词缀	OED SOED Webster Wiktionary tetrakis-\|ˈtɛtrəkɪs\|formative element [f. Gr. τετράκις four times] used in Chem. in the names of compounds to signify four identical groups all substituted in the same way; formerly = tetra- 2.1850[see tri- 5 a].1912Jrnl. Chem. Soc. CI. 2003 The product obtained was tetrakisazobenzene, a deep red substance.1951Kirk & Othmer Encycl. Chem. Technol. VII. 580 Tetrakis(p-dimethylaminophenyl)hydrazine is dissociated to the extent of 10% in benzene solution and 21% in nitrobenzene.1963A. J. Hall Student's Handbk. Textile Sci. v. 259 The Proban flameproofing process is essentially based on the use of tetrakis-hydroxymethyl⁓phosphonium chloride.1979G. C. Barrett in D. N. Jones Comprehensive Organic Chem. III. xi. iv. 77 Tetra⁓kis(methylthio)methane, (MeS)₄C, undergoes exchange with dithiols. tetrakis- /ˈtɛtrəkɪs/ prefix. ORIGIN: Greek tetrakis four times. Fourfold; spec. in Chemistry, forming names of compounds containing four groups identically substituted or coordinated. Cf. bis-, tris-. DERIVATIVE tetrakis-hexaˈhedron noun, pl. -dra, -drons, = tetrahexahedron L19. tetrakis- combining form Etymology: Greek, from tetrakis; akin to Greek tettares, tessares four — more at four : four times : quadrupled — especially in complex chemical expressions < tetrakis-(2-hydroxyethyl)-ammonium chloride (HOCH₂CH₂)₄NCl > tetrakis- Prefix mathematics A variant of tetra-, used for multiplication with a second numerical prefix. chemistry, obsolete A variant of tetra- used before vowels: tetrakisazobenzine chemistry A variant of tetra-, used for substitutions of four complex rather than simple units, as in tetrakis-(trichloromethyl)-benzene, benzene with four trichloromethyl groups attached, tetrakis-hydroxymethyl~phosphonium chloride, tetrakis(methylthio)methane, (MeS)₄C, tetrakis(p-dimethylaminophenyl)hydrazine Etymology Greek τετράκις "four times" Related terms bis- tris- pentakis- hexakis-
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