para-aminobenzoicadj.

Brit.

/ˌparə(r)əˌmiːnəʊbɛnˈzəʊɪk/,

/ˌparə(r)əˌmʌɪnəʊbɛnˈzəʊɪk/,

/ˌparə(r)ˌamᵻnəʊbɛnˈzəʊɪk/, U.S.

/ˈˌpɛrə(ə)ˌminoʊˌbɛnˈzoʊɪk/

Origin: Formed within English, by derivation. Etymons: para- prefix¹, aminobenzoic acid n. at amino- comb. form 2.

Etymology: < para- prefix¹ + aminobenzoic (in aminobenzoic acid n. at amino- comb. form 2).

Chemistry.

para-aminobenzoic acid n. the para-isomer of aminobenzoic acid, (H₂N)C₆H₄(COOH), which is widely distributed in plant and animal tissue, is used in sunscreens, in manufacturing folic acid, azo dyes, etc., and in laboratories as a sulphonamide antagonist, and is sometimes considered a member of the vitamin B group. Abbreviated PABA.

ΚΠ

1904 Proc. Royal Soc. 73 164 The conductivities of solutions of para-amino-benzoic acid have been measured.

1940 Nature 28 Dec. 838/2 (heading) Para-amino benzoic acid as a bacterial growth factor.

1987 N. J. Smith & C. L. Stanitski Sports Med. xxiv. 177 It is essential to protect exposed surfaces with sunscreen containing paraaminobenzoic acid.

2002 Times 13 Mar. (Business section) 34/1 Para-aminobenzoic acid, cyanocobalamin (or hydroxycobalamin, vitamin B12) or even foliate [sic] have been included in the complex.

This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022).

单词	para-aminobenzoic
释义	para-aminobenzoicadj. Brit. /ˌparə(r)əˌmiːnəʊbɛnˈzəʊɪk/, /ˌparə(r)əˌmʌɪnəʊbɛnˈzəʊɪk/, /ˌparə(r)ˌamᵻnəʊbɛnˈzəʊɪk/, U.S. /ˈˌpɛrə(ə)ˌminoʊˌbɛnˈzoʊɪk/ Origin: Formed within English, by derivation. Etymons: para- prefix¹, aminobenzoic acid n. at amino- comb. form 2. Etymology: < para- prefix¹ + aminobenzoic (in aminobenzoic acid n. at amino- comb. form 2). Chemistry. para-aminobenzoic acid n. the para-isomer of aminobenzoic acid, (H₂N)C₆H₄(COOH), which is widely distributed in plant and animal tissue, is used in sunscreens, in manufacturing folic acid, azo dyes, etc., and in laboratories as a sulphonamide antagonist, and is sometimes considered a member of the vitamin B group. Abbreviated PABA. ΚΠ 1904 Proc. Royal Soc. 73 164 The conductivities of solutions of para-amino-benzoic acid have been measured. 1940 Nature 28 Dec. 838/2 (heading) Para-amino benzoic acid as a bacterial growth factor. 1987 N. J. Smith & C. L. Stanitski Sports Med. xxiv. 177 It is essential to protect exposed surfaces with sunscreen containing paraaminobenzoic acid. 2002 Times 13 Mar. (Business section) 34/1 Para-aminobenzoic acid, cyanocobalamin (or hydroxycobalamin, vitamin B12) or even foliate [sic] have been included in the complex. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < adj.1904
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