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This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Meaning: a prefix used to make words with a sense opposite to that of the root word; in this case, meaning "without" or "-less". This is usually used to describe organisms without a certain characteristic, as well as organisms in which that characteristic may not be immediately obvious.
Also called Indianite. A mineral from the lime-rich end of the plagioclase group of minerals. Anorthites are usually silicates of calcium and aluminium occurring in some basic igneous rocks, typically those produced by the contact metamorphism of impure calcareous sediments. anticline An arched fold in which the layers usually dip away from the fold axis. Contrast syncline. aphanic Having the ...
Endothermic – animals which maintain a body temperature which is above ambient temperature. See Ectothermic. Epibenthos – invertebrates that live on top of the seabed. Compare benthos. Epipelagic – The top layer of the ocean from the surface down to about 200 metres. This is the illuminated zone where there is enough light for photosynthesis.
The portion of a bird's head found between the forehead —demarcated by an imaginary line drawn from the anterior corners of the eyes—and through the "remainder of the upper part of the head", to the superciliary line. The occiput or hindhead, is the posterior part of the crown. [133] cryptic plumage Also defined: phaneric plumage.
Humans do not have a beak, so a term such as "rostral" used to refer to the beak in some animals is instead used to refer to part of the brain; [67] humans do also not have a tail so a term such as "caudal" that refers to the tail end may also be used in humans and animals without tails to refer to the hind part of the body. [68]
The uptick in use of and interest in words using “x” (like folx, womxn, and Latinx), then, is a direct reflection of society’s need for terms that support identities that don’t fit in a ...
An X-ray optics design with an ultra wide field of view, based on the structure of the eyes of a lobster. It allows X-ray light to enter from multiple angles, capturing more X-rays from a larger area than other X-ray telescopes. Local Group longitude of the ascending node (☊ or Ω)