active-passive
41active transport — n movement of a chemical substance by the expenditure of energy against a gradient in concentration or electrical potential across a plasma membrane * * * (in biochemistry) an energy dependent process in which certain substances (including ions,… …
42passive — (adj.) late 14c., in grammatical sense (opposed to active), from L. passivus capable of feeling or suffering, from pass , pp. stem of pati to suffer (see PASSION (Cf. passion)). Meaning not active is first recorded late 15c. Passive resistance… …
43Passive — is the opposite of active. It has several specific meanings:* Passive voice of a verb * Passivation is the formation of a non reactive surface film that inhibits further corrosion of a metal * Passive components in electronics * Passive mode in… …
44Active recall — is a principle of efficient learning, which claims the need to actively stimulate memory during the learning process. It contrasts with passive review, in which the learning material is processed passively (e.g. by reading, watching, etc.).For… …
45passive foreign investment company — (PFIC) USA A foreign corporation is a PFIC for any taxable year in which either at least: • 75% of its gross income is passive income (as defined in IRC § 1297(b)); or • 50%, on average and generally by value, of its assets (determined under …
46passive immunity — n immunity acquired by transfer of antibodies (as by injection of serum from an individual with active immunity) compare ACQUIRED IMMUNITY, NATURAL IMMUNITY passive immunization n * * * acquired immunity that a person receives by transfer of… …
47passive fund management — Passive managers buy and hold portfolios that are designed to replicate the market, or a large proportion of it. By buying each stock in an index, or a broad representation of the stocks in an index, passive managers generally deliver returns… …
48passive — ► ADJECTIVE 1) accepting or allowing what happens or what others do, without active response or resistance. 2) Grammar (of verbs) in which the subject undergoes the action of the verb (e.g. they were killed as opposed to the active form he killed …
49Active sensory systems — are sensory receptors that are activated by probing the environment with self generated energy. Examples include echolocation of bats and dolphins and insect antennae. Using self generated energy allows more control over signal intensity,… …
50active — active, operative, dynamic, live are synonymous when they mean being at work or in effective action. Active in general may be employed wherever the others are applicable, but it is also usable where none of the others would be appropriate. It may …
