blackguard(1) (iou) and polyketide synthase (medicine)

blackguard(1) (iou)

blackguard noun & adjective. Orig. two words. E16.
[from BLACK adjective + GUARD noun: orig. significance unkn.]
A. noun.
I. A body of people.
A guard or group of attendants black in person, dress, or character. E16-E18.
the blackguard:
a. The lowest menials of a household; the scullions; an army's camp-followers. M16-E18.
b. Vagabonds, criminals, or vagrant children, as a group or class. L17-M18.
II. An individual.
A guard or attendant black in person, dress, or character. M16-M18.
A vagrant child, a shoeblack, etc. Only in 18.
A scoundrel, a villain; a foul-mouthed person. M18.
III.
More fully Irish blackguard. A kind of snuff. L18-L19.
b. adjective.
Of the vagrant children, shoeblacks, etc. L17-E19.
Scoundrelly, villainous; scurrilous. L18.
blackguardism noun blackguardly language or behaviour L18.
blackguardly adverb & adjective (a) adverb (rare) in the manner of a blackguard; (b) adjective characteristic of a blackguard, scoundrelly, scurrilous: E19.

polyketide synthase (medicine)

polyketide synthase
<chemical> A group of enzymes functionally and structurally resembling the fatty acid synthase complex of microorganisms which produce the benzoisochromane quinone moiety of granaticin and Other antibiotic; genbank y10438 (fkba)

Chemical name: synthetase, polyketide

Synonym: 6-deoxyerythronolide b synthase, 6-deoxyerythronolide-b synthase, debs, type II polyketide beta-ketoacyl synthase, griseusin polyketide synthase, type I polyketide synthase, sterigmatocystin polyketide synthase, st polyketide synthase, urdamycin polyketide synthase, polyketide synthase l1, pksl1 gene product, fkba gene product, niddamycin polyketide synthase, pks enzyme

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