Standards are materials containing a precisely known concentration of a substance for use in quantitative analysis. A standard provides a reference that can be used to determine unknown concentrations or to calibrate analytical instruments.tandards are materials containing a precisely known concentration of a substance for use in quantitative analysis. A standard provides a reference that can be used to determine unknown concentrations or to calibrate analytical instruments.
Apiarist is a fancy word for a beekeeper. An apiarist enjoys working with an unusual kind of pet, the honeybee. Because bees and other pollinators are so important to a healthy environment scientists encourage âbee-spottingâ to improve fruits and vegetables. The -ist suffix is a Greek form that means âa person connected with.â So, a good apiarist is probably a strong environmentalist.
cactus noun [C]. âº any of a âtype of âplant that âgrows in the âdesert, having âthick âstems for âstoring âwater and usually spines (= âsharp âpoints). (Definition of cactus from the Cambridge Academic Content Dictionary Â© Cambridge University Press). any of many âtypes of âdesert âplant usually with âsharp âspines and âthick âstems for âstoring âwater. (Definition of cactus from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press).