Origin

from amide

amido-

Word Origin

a combining form used in the names of chemical compounds in which the −NH₂group united with an acid radical is present:

amidocyanogen.

(erroneously) amino-.

Also, especially before a vowel, amid-.

Origin

amide + -o-

Related Words

amid-
amidogen

amido-1. a prefix denoting the replacement of an OH group by the NH₂ radical.

2. → amino-.

[combining form of amide]

amido-|əˈmaɪdəʊ|combining form of amide; used also in the phrases amido compounds, amido derivatives, i.e. those in which one atom of hydrogen is replaced by an atom of the radical amidogen NH₂, as amido-benzine (= aniline), amido-ethane (= ethylamine), amido-methane (= methylamine), amido-caproic acid, etc.For recent use seeamino- and quot. 1949.1854Pereira Mat. Med. (ed. 4) I. 938 Amido-chloride of mercury.1864Reader 18 June 782/1 The fluorescence of two new substances—amidophthalic and amidoterephthalic acid.1873Fownes Chem. 683 Alanine, or amidopropionic acid.Ibid. 760 It is converted into amidobenzene or aniline.1877Watts Fownes' Chem. II. 446 Benzene group: amido derivatives.Ibid., Only one nitro-group is obtained in the first instance, so that nitro-amido compounds are obtained.1881Thudichum Ann. Chem. Med. II. viii, On the Albuminous Substances, Amides, Amido-Acids, and Ammonium Salts as Sources of the Urea.1949S. & L. M. Miall New Dict. Chem. 29/2 The prefix amido..is now usually restricted to compounds containing the amide group (—CO.NH₂).

☞ amid-, amido-

amido- /əˈmʌɪdəʊ/ combining form of amide (orig. = amino-): see -o-. Also as attrib. adjective amido. M19.

amido-
combining form
see amid-

词汇	amido-
词根词缀	Collins Dictionary.com Macquarie OED Prefixsuffix.com SOED Webster amido- combining form (in chemistry) indicating the presence of an amide group Origin from amide amido- Word Origin 1 a combining form used in the names of chemical compounds in which the −NH₂group united with an acid radical is present: amidocyanogen. 2 (erroneously) amino-. Also, especially before a vowel, amid-. Origin amide + -o- Related Words amid- amidogen amido-1. a prefix denoting the replacement of an OH group by the NH₂ radical. 2. → amino-. [combining form of amide] amido-\|əˈmaɪdəʊ\|combining form of amide; used also in the phrases *amido compounds, amido derivatives, i.e. those in which one atom of hydrogen is replaced by an atom of the radical amidogen NH₂, as amido-benzine* (= aniline), *amido-ethane* (= ethylamine), *amido-methane* (= methylamine), *amido-caproic acid, etc.For recent use seeamino- and quot. 1949.1854Pereira Mat. Med.* (ed. 4) I. 938 Amido-chloride of mercury.1864Reader 18 June 782/1 The fluorescence of two new substances—amidophthalic and amidoterephthalic acid.1873Fownes Chem. 683 Alanine, or amidopropionic acid.Ibid. 760 It is converted into amidobenzene or aniline.1877Watts Fownes' Chem. II. 446 Benzene group: amido derivatives.Ibid., Only one nitro-group is obtained in the first instance, so that nitro-amido compounds are obtained.1881Thudichum Ann. Chem. Med. II. viii, On the Albuminous Substances, Amides, Amido-Acids, and Ammonium Salts as Sources of the Urea.1949S. & L. M. Miall New Dict. Chem. 29/2 The prefix amido..is now usually restricted to compounds containing the amide group (—CO.NH₂). ☞ amid-, amido- amido- /əˈmʌɪdəʊ/ combining form of amide (orig. = amino-): see -o-. Also as attrib. adjective amido. M19. amido- combining form see amid-
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