bor-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly. If the subsequent element is an existing word, it is likely to retain its original stress pattern, e.g. bor-methyl Brit.

/bɔːˈmiːθʌɪl/,

/bɔːˈmɛθʌɪl/,

/bɔːˈmɛθ(ᵻ)l/, U.S.

/ˌbɔrˈmɛθ(ə)l/.

Origin: Formed within English, by clipping or shortening. Etymon: boron n.

Etymology: Shortened < boron n.

Chemistry.

Forming names of compounds of boron with the alcohol radicals; e.g. bor-ethyl n. 3(C₂H₅)B, bor-methyl 3(CH₃)B obtained by acting on ethyl borate with zinc ethyl and methyl respectively.

ΚΠ

1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxxi. 318 Bor ethyl..is a colourless liquid, boiling at 95°, possesses a very powerful acrid smell, and takes fire on exposure to the air, burning with a green flame.

1881 H. E. Roscoe Chem. III. 244 Bormethyl is a colourless gas.

This entry has not yet been fully updated (first published 1887; most recently modified version published online December 2021).

单词	bor-
释义	bor-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. If the subsequent element is an existing word, it is likely to retain its original stress pattern, e.g. bor-methyl Brit. /bɔːˈmiːθʌɪl/, /bɔːˈmɛθʌɪl/, /bɔːˈmɛθ(ᵻ)l/, U.S. /ˌbɔrˈmɛθ(ə)l/. Origin: Formed within English, by clipping or shortening. Etymon: boron n. Etymology: Shortened < boron n. Chemistry. Forming names of compounds of boron with the alcohol radicals; e.g. bor-ethyl n. 3(C₂H₅)B, bor-methyl 3(CH₃)B obtained by acting on ethyl borate with zinc ethyl and methyl respectively. ΚΠ 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxxi. 318 Bor ethyl..is a colourless liquid, boiling at 95°, possesses a very powerful acrid smell, and takes fire on exposure to the air, burning with a green flame. 1881 H. E. Roscoe Chem. III. 244 Bormethyl is a colourless gas. This entry has not yet been fully updated (first published 1887; most recently modified version published online December 2021). < comb. form1869
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