| 单词 | chemical group |
| 释义 | chemical group (once / 303060 pages) n WORD FAMILY chemical group: chemical groups USAGE EXAMPLESSome drug molecules can be split into smaller parts that are then equipped with specific chemical groups. Nature(Nov 22, 2016) Four workers were also killed in an explosion at a facility run by the Wanhua Chemical Group on Wednesday. Reuters(Sep 21, 2016) The chemical groups that block further synthesis can then be cut off and washed away, and another cycle of synthesis begins. Nature(Sep 06, 2016) n (chemistry) two or more atoms bound together as a single unit and forming part of a molecule Syn|Hypo|Hyper group, radical acyl, acyl group any group or radical of the form RCO- where R is an organic group alcohol group, alcohol radicalthe chemical group -OH aldehyde group, aldehyde radicalthe chemical group -CHO alkyl, alkyl group, alkyl radicalany of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons allyl, allyl group, allyl radicalthe univalent unsaturated organic radical C3H5; derived from propylene amino, amino groupthe radical -NH2 amyla hydrocarbon radical that occurs in many organic compounds azido group, azido radicalthe univalent group N3- derived from hydrazoic acid azo group, azo radicalthe bivalent group -N=N- united to two hydrocarbon groups benzyl, benzyl group, benzyl radicalthe univalent radical derived from toluene benzoyl group, benzoyl radicalthe univalent radical derived from benzoic acid arsenic group, cacodyl, cacodyl group, cacodyl radicalthe univalent group derived from arsine carbonyl groupthe bivalent radical CO carboxyl, carboxyl groupthe univalent radical -COOH; present in and characteristic of organic acids chromophorethe chemical group that gives color to a molecule cyanide group, cyanide radical, cyano group, cyano radicalthe monovalent group -CN in a chemical compound glyceryla trivalent radical derived from glycerol by removing the three hydroxyl radicals hydrazo group, hydrazo radicalthe bivalent group -HNNH- derived from hydrazine hydroxyl, hydroxyl group, hydroxyl radicalthe monovalent group -OH in such compounds as bases and some acids and alcohols ketone groupa group having the characteristic properties of ketones methylene, methylene group, methylene radicalthe bivalent radical CH2 derived from methane propyl, propyl group, propyl radicalthe monovalent organic group C3H7- obtained from propane butyla hydrocarbon radical (C4H9) nitro groupthe group -NO3 nitritethe radical -NO2 or any compound containing it (such as a salt or ester of nitrous acid) uranyl, uranyl group, uranyl radicalthe bivalent radical UO2 which forms salts with acids vinyl, vinyl group, vinyl radicala univalent chemical radical derived from ethylene acetyl, acetyl group, acetyl radical, ethanoyl group, ethanoyl radicalthe organic group of acetic acid (CH3CO-) ethyl, ethyl group, ethyl radicalthe univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atom glucosaminean amino derivative of glucose that is a component of many polysaccharides foryml(chemistry) the negative univalent acyl radical CHO that occurs in aldehydes methyl, methyl group, methyl radicalthe univalent radical CH3- derived from methane sodium nitritenitrite used to preserve and color food especially in meat and fish products; implicated in the formation of suspected carcinogens building block, unit a single undivided natural thing occurring in the composition of something else |
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