individual animal, plant, piece of mineral. Examples, or parts of, plants or animals.

piece of rock or metal that has fallen to earth's surface from outer space as meteor. Stony or metallic masses of matter that has fallen to the earth's surface from outer space.

small part or quantity intended to show what whole is like. Small quantities of something used as a taster. To try (e.g. food), to see if you like it.

soft leather slipper or shoe, strictly one without separate heel. Soft leather shoe.

Concerning, involving or caused by being microbes.

used for emphasis with following adjective functioning as adverb. thing that is unspecified or unknown.

Doing your job. action of doing work. To be functioning properly, e.g. a car.

thing characteristic of its kind. be illustrated or exemplified.

person who is studying or has expert knowledge of one or more of natural or physical sciences. People who are trained in a science.

contained as part of whole being considered. To make someone, something part of a group.

Person studying at school.

unit of information equal to one million million (10 ¹²) or, strictly, 2 ⁴⁰ bytes. Unit of 1024 gigabytes of information.

be entitled to act for someone.

large bony marine fish with three-lobed tail fin. .

Concerning a Masters or Ph.D. university courses. Someone who has a degree from a school, university. To move up from a position to a higher, better one.