alkaloidaladj.
/ˌalkəˈlɔɪdl/, U.S. /ˌælkəˈlɔɪd(ə)l/ Chemistry.
Of the nature of an alkaloid; of or relating to alkaloids.
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alkaloid1829
alkaloidal1835
1835 R. Christison Treat. Poisons (ed. 3) ii. xxxv. 783 A white powdery principle, of a bitter taste, fusible not volatile, alkaloidal.
1850 Philos. Trans. (Royal Soc.) 140 112 Bromaniline still retains a strongly alkaloidal character.
1882 T. Stevenson in Echo 11 Mar. 3/2 The first alkaloidal extract contained more alkaloid than was accounted for by the morphia.
1912 Times 7 Oct. 3/2 The effect of cultivation and fertilizers on the growth of belladonna and on the alkaloidal content of the leaves.
1945 Q. Jrnl. Pharmacy & Pharmacol. 18 348 Although not an alkaloid, meconic acid is of importance in alkaloidal analysis as an indication of the presence of opium.
2004 C. P. Khare Indian Herbal Remedies 36/1 The alkaloidal extract of the leaves showed mild adrenolytic, non-specific antispasmodic, hypotensive and anti-cholinesterase activity.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).
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adj.1835