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An alpha privative or, rarely, [1] privative a (from Latin alpha prīvātīvum, from Ancient Greek α στερητικόν) is the prefix a-or an-(before vowels) that is used in Indo-European languages such as Sanskrit and Greek and in words borrowed therefrom to express negation or absence, for example the English words of Greek origin atypical, anesthetic, and analgesic.
biology, biological blast-germinate or bud Greek βλαστός (blastós) blastomere: blephar(o)-of or pertaining to the eyelid Greek βλέφαρον (blépharon), eyelid blepharoplasty: brachi(o)-of or relating to the arm Latin bracchium, from Greek βραχίων (brakhíōn), arm brachium of inferior colliculus: brachy-
Anisogamy (the opposite of isogamy) comes from the ancient Greek negative prefix a(n)-(alpha privative), the Greek adjective isos (meaning equal) and the Greek verb gameo (meaning to have sex/to reproduce), eventually meaning "non-equal reproduction" obviously referring to the enormous differences between male and female gametes in size and abilities. [10]
a-, called alpha privative, from Ancient Greek ἀ-, ἀν-, from Proto-Hellenic *ə-; e.g. apathetic, abiogenesis. These all stem from a PIE syllabic nasal privative *n̥-, the zero ablaut grade of the negation *ne, i.e. "n" used as a vowel, as in some English pronunciations of "button". This is the source of the 'n' in 'an-' privative ...
A high-ranking male mandrill advertises his status with bright facial coloration. [1]In the zoological field of ethology, a dominance hierarchy (formerly and colloquially called a pecking order) is a type of social hierarchy that arises when members of animal social groups interact, creating a ranking system.
Acoelomorpha is a subphylum of very simple and small soft-bodied animals with planula-like features which live in marine or brackish waters.They usually live between grains of sediment, swimming as plankton, or crawling on other organisms, such as algae and corals. [1]
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 ...
Psychology is the scientific study of mind and behavior. [1] [2] Its subject matter includes the behavior of humans and nonhumans, both conscious and unconscious phenomena, and mental processes such as thoughts, feelings, and motives. Psychology is an academic discipline of immense scope, crossing the boundaries between the natural and social ...