constraints imposed by the molecular structure of DNA and RNA on the formation of hydrogen bonds among the four purine and pyrimidine bases such that adenine pairs with thymine or uracil, and guanine pairs with cytosine.
- Base path
the prescribed course for a base runner on the field extending in designated areas between the bases. Historical Examples You timed that exactly, Joe, cried Robbie, and you came down that base path like a streak. Baseball Joe, Captain of the Team Lester Chadwick He flew along the base path at a rattling clip and […]
- Base pay
pay received for a given work period, as an hour or week, but not including additional pay, as for overtime work. Contemporary Examples The base pay is about $45,000, and it takes 22 long years to hit the $100,000 cap, according to the Department of Education. The $140,000 Janitors Azriel James Relph November 23, 2010 […]
- Base period
a period of time used as a standard of comparison in measuring changes in prices, taxes, income, etc., at other periods of time. Historical Examples What was the percentage change in the value of money from the base period to 1912? Manual of References and Exercises in Economics Frank A. Fetter noun (statistics) a neutral […]
bedplate. Dentistry. a sheet of plastic material for making trial denture plates. the portion of a denture in contact with the jaw. Metallurgy. a plate of metal to be clad with another metal. Historical Examples The following morning, under the frightened gaze of his guards, Jason tackled the underside of the baseplate. The Ethical Engineer […]