Lateral line

Lateral line
Lateral Lat"er*al, a. [L. lateralis, fr. latus, lateris, side: cf. F. lat['e]ral.] 1. Of or pertaining to the sides; as, the lateral walls of a house; the lateral branches of a tree. [1913 Webster]

2. (Anat.) Lying at, or extending toward, the side; away from the mesial plane; external; -- opposed to {mesial}. [1913 Webster]

3. Directed to the side; as, a lateral view of a thing. [1913 Webster]

{Lateral cleavage} (Crystallog.), cleavage parallel to the lateral planes.

{Lateral equation} (Math.), an equation of the first degree. [Obs.]

{Lateral line} (Anat.), in fishes, a line of sensory organs along either side of the body, often marked by a distinct line of color.

{Lateral pressure} or {stress} (Mech.), a pressure or stress at right angles to the length, as of a beam or bridge; -- distinguished from longitudinal pressure or stress.

{Lateral strength} (Mech.), strength which resists a tendency to fracture arising from lateral pressure.

{Lateral system} (Bridge Building), the system of horizontal braces (as between two vertical trusses) by which lateral stiffness is secured. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • lateral line — n. a row of sensory organs along each side of the head and body in fishes and a few amphibians, probably for detecting vibrations, currents, and pressure: see FISH …   English World dictionary

  • Lateral line — In fish, the lateral line is a sense organ used to detect movement and vibration in the surrounding water. Lateral lines are usually visible as faint lines running lengthwise down each side, from the vicinity of the gill covers to the base of the …   Wikipedia

  • lateral line — a tube like sensory organ (usually bearing pores) extending along the side of the body from the rear of the head to the tail. Detects water movements, low frequency vibrations (lower than 160 200 Hz) and perhaps temperature changes. In some… …   Dictionary of ichthyology

  • lateral line — noun sense organs of fish and amphibians; believed to detect pressure changes in the water • Syn: ↑lateral line organ • Hypernyms: ↑sense organ, ↑sensory receptor, ↑receptor • Part Holonyms: ↑fish, ↑ …   Useful english dictionary

  • lateral line system — ▪ biology also called  lateralis system   a system of tactile sense organs (senses), unique to aquatic vertebrates (vertebrate) from cyclostome fishes (cyclostome) (lampreys (lamprey) and hagfish) to amphibians (amphibian), that serves to detect… …   Universalium

  • lateral line disease — hole in head disease (head and lateral line erosion (a nutritional deficiency seen in aquarium fish, usually of vitamin C, aggravated by stress and poor water quality. Holes develop in the head and and sometimes along the lateral line. Death may… …   Dictionary of ichthyology

  • lateral line organ — noun sense organs of fish and amphibians; believed to detect pressure changes in the water • Syn: ↑lateral line • Hypernyms: ↑sense organ, ↑sensory receptor, ↑receptor • Part Holonyms: ↑fish, ↑ …   Useful english dictionary

  • lateral line organ — one of the series of horseshoe shaped structures left on the flank of Myctophidae members when the scales become detached. A lateral line organ count is often used in place of a scale count because scales are very deciduous in this family …   Dictionary of ichthyology

  • lateral line pore — one of the series of the apertures of the lateral line canal. Usually counted from the most posterior one touching the shoulder girdle to the one wholly or mostly in front of the base of the caudal fin. Found in all fishes (except Amphioxi and… …   Dictionary of ichthyology

  • lateral line scale — on of those scales along the side of the body bearing lateral line pores (or pit organs) or in the same row as those. The count may include only the pored scales (usual method) or all scales in the same row …   Dictionary of ichthyology

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