channel-shaped
21V-shaped valley — the V shape of the cross profile of a river valley in its upper course. As the river has little energy, most erosion is confined to periodic spurts when rainstorm events allow an increase in energy and thus traction and abrasion of the channel… …
22window channel — A British term for glass channel a U shaped draft excluder, often fitted with a steel core, along wind up door window edges inside the door frame …
23C-channel — noun A structural framing member shaped like a squared off letter C …
24Trench drain — A trench drain (also channel drain, line drain, slot drain, linear drain or strip drain) is a specific type of floor drain containing a dominant through or channel shaped body. It is used for the rapid evacuation of surface water or for the… …
25Structural steel — Various structural steel shapes Structural steel is steel construction material, a profile, formed with a specific shape or cross section and certain standards of chemical composition and mechanical properties. Structural steel shape, size,… …
26action potential — Physiol. the change in electrical potential that occurs between the inside and outside of a nerve or muscle fiber when it is stimulated, serving to transmit nerve signals. Cf. nerve impulse. [1925 30] * * * Brief (about one thousandth of a… …
27synapse — /sin aps, si naps /, n., v., synapsed, synapsing. Physiol. n. 1. a region where nerve impulses are transmitted and received, encompassing the axon terminal of a neuron that releases neurotransmitters in response to an impulse, an extremely small… …
28end-plate potential — ▪ physiology chemically induced change in electric potential of the motor end plate, the portion of the muscle cell membrane that lies opposite the terminal of a nerve fibre at the neuromuscular junction. The end plate membrane is… …
29postsynaptic potential — ▪ biology a temporary change in the electric polarization of the membrane of a nerve cell ( neuron). The result of chemical transmission of a nerve impulse at the synapse (neuronal junction), the postsynaptic potential can lead to the… …
30Malacca, Strait of — Channel connecting the Indian Ocean and the South China Sea. It lies between Sumatra and the Malay Peninsula. It is 500 mi (800 km) long and is funnel shaped; only 40 mi (65 km) wide in the south, it broadens in the north to 155 mi (249 km).… …
