| synthetic | Relating to or made by synthesis. (05 Mar 2000) |
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| synthetic chemistry | The formation or building up of complex compounds by uniting the more simple ones. (05 Mar 2000) |
| synthetic dyes | Organic dye compounds originally derived from coal-tar derivatives; presently produced by synthesis from benzene and its derivatives; examples include eosin, methylene blue, and fluorescein. (05 Mar 2000) |
| synthetical | 1. Of or pertaining to synthesis; consisting in synthesis or composition; as, the synthetic method of reasoning, as opposed to analytical. "Philosophers hasten too much from the analytic to the synthetic method; that is, they draw general conclusions from too small a number of particular observations and experiments." (Bolingbroke) 2. <chemistry> Artificial. Cf. Synthesis. 3. <zoology> Comprising within itself structural or other characters which are usually found only in two or more diverse groups; said of species, genera, and higher groups. See the Note under Comprehensive. Synthetic, or Synthetical language, an inflectional language, or one characterised by grammatical endings; opposed to analytic language. Origin: Gr., cf. F. Synthetique. Source: Websters Dictionary (01 Mar 1998) |
| androgens, synthetic | Compounds obtained by chemical synthesis which possess masculinizing activities, but differ in structure from naturally occurring androgens. (12 Dec 1998) |
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| vaccines, synthetic | Small synthetic peptides that mimic surface antigens of pathogens and are immunogenic, or vaccines manufactured with the aid of recombinant DNA techniques. The latter vaccines may also be whole viruses whose nucleic acids have been modified. (12 Dec 1998) |
| genes, synthetic | Biologically functional sequences of DNA chemically synthesised in vitro. (12 Dec 1998) |
| glucocorticoids, synthetic | <chemical> Synthetic chemical compounds which increase gluconeogenesis, raising the concentration of liver glycogen and blood sugar, but differ in structure from naturally occurring glucocorticoids. Pharmacological action: steroidal anti-inflammatory agents, topical anti-inflammatory agents. (12 Dec 1998) |
| resins, synthetic | Polymers of high molecular weight which at some stage are capable of being molded and then harden to form useful components. (12 Dec 1998) |
| mineralocorticoids, synthetic | Synthetic steroids that mimic the activity of the mineralocorticoids obtained from the adrenal cortex, but differ in structure from the naturally occurring mineralocorticoids. (12 Dec 1998) |
| contraceptives, oral, synthetic | Oral contraceptives which owe their effectiveness to synthetic preparations. (12 Dec 1998) |
| contraceptives, postcoital, synthetic | Postcoital contraceptives which owe their effectiveness to synthetic preparations. (12 Dec 1998) |
| progestational hormones, synthetic | Compounds obtained by chemical synthesis that possess progestational activity, but differ in structure from naturally occurring progestational hormones. (12 Dec 1998) |
| prostaglandin endoperoxides, synthetic | Synthetic compounds that are analogs of the naturally occurring prostaglandin endoperoxides and that mimic their pharmacologic and physiologic activities. They are usually more stable than the naturally occurring compounds. (12 Dec 1998) |
| prostaglandins a, synthetic | Analogs or derivatives of prostaglandin a that do not occur naturally in the body. They do not include the product of the chemical synthesis of hormonal pga. (12 Dec 1998) |
| prostaglandins e, synthetic | Analogs or derivatives of prostaglandins e that do not occur naturally in the body. They do not include the product of the chemical synthesis of hormonal pge. (12 Dec 1998) |
| prostaglandins f, synthetic | Analogs or derivatives of prostaglandins f that do not occur naturally in the body. They do not include the product of the chemical synthesis of hormonal pgf. (12 Dec 1998) |
| prostaglandins, synthetic | Compounds obtained by chemical synthesis that are analogs or derivatives of naturally occurring prostaglandins and that have similar activity. (12 Dec 1998) |
| hormones, synthetic | Synthetic chemical compounds that mimic the activity of hormones produced in the body, but differ in structure from naturally occurring hormones. (12 Dec 1998) |