| 单词 | iron stain |
| 释义 | > as lemmasiron stain iron stain n. (a) a brown or reddish stain caused by iron dissolved in water; a rust stain; (b) a reddish discoloration of plants typically caused by fungal infection (cf. rust n.1 6); now rare. [With sense (b) compare Spanish mancha de hierro (1827 in a bilingual dictionary (glossing ‘iron mould’), or earlier).] ΚΠ 1763 W. Lewis Commercium Philosophico-technicum Index sig. Pppp3 Madder... Produces a black die on yellow iron stain. 1877 Jrnl. Soc. Arts 3 Aug. 861/2 The specimens..of the iron-stain are, however, at once distinguishable from the ravages of the Cemiostoma. 1880 Spons' Encycl. Manuf. I. 700 (Coffee) A minute fungus named Depazea maculosa, which causes the so-called ‘iron stain’, circular or elliptical blotches of an ochreish-yellow colour. 1938 Ecol. Monogr. 8 81 Gray silt loam, definitely stratified, streaked and mottled with iron stains. 2000 Tampa (Florida) Tribune (Nexis) 25 Dec. 1 One complaint: The water causes iron stains. < as lemmas |
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