colourless crystalline compound. Any of several bases that are derivatives of purine; a colorless crystalline organic base containing nitrogen; the parent compound of various biologically important substances.

To guide or explain something, e.g. a town.

likely or prone to be affected by. conditionally upon. An area of study at school, e.g. math, history. To cause to suffer or experience something.

salt or ester of phosphoric acid. Salt of phosphoric acids.

recognizably different in nature.

have or hold within.

begin or be reckoned from particular point in time or space.

The way in which the parts of a system or object are arranged or organized, or a system arranged in this way. To plan, organize, or arrange the parts of something.

A path or way that you can walk.

having acquired much knowledge through study. To get knowledge or skills by study or experience.

expressive. what is meant by word, text, etc.. To have a particular intention or value.

assembled or made from whatever is available, and so unlikely to be of highest quality. mark or wound made by scratching. score or mark surface of something with sharp or pointed object.

compound consisting of nucleoside linked to phosphate group.

plan of action or policy designed to achieve major or overall aim. Branch of military dealing with command.

(Of a person) well-known and highly respected. To make something clearly different from others.