lobe

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Related to lobed: lobed leaf, lobbed

lobe

1. any of the subdivisions of a bodily organ or part, delineated by shape or connective tissue
2. short for ear lobe
3. any of the loops that form part of the graphic representation in cylindrical coordinates of the radiation pattern of a transmitting aerial
4. any of the parts, not entirely separate from each other, into which a flattened plant part, such as a leaf, is divided
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

lobe

1. See antenna.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

lobe

[lōb]
(biology)
A rounded projection on an organ or body part.
(design engineering)
A projection on a cam wheel or a noncircular gear wheel.
(electromagnetism)
A part of the radiation pattern of a directional antenna representing an area of stronger radio-signal transmission. Also known as radiation lobe.
(engineering acoustics)
A portion of the directivity pattern of a transducer representing an area of increased emission or response.
(hydrology)
A curved projection on the margin of a continental ice sheet.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

lobe

A segment of a circle in tracery; a foil.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

lobe

A curve representing the relative signal strength plotted against the position of the aerial with respect to a target. Side lobes are small lobes of energy radiated by radar aerials in diverging directions to the main beam—usually four, two at an angle of 7° from the main beam and two at angle of 90°. Side lobes may cause false weak echoes. An antenna pattern may have just one lobe, or it may have several lobes. Different lobes may have different magnitudes. The strongest lobe is called the main or major lobe. The weak lobes are called secondary or minor lobes.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
similis collected from Cyanocorax chrysops as new species in Brazil by Freitas, 1951 differs in having smaller body size, smaller, sub-terminal oral sucker, presence of esophagus, lobed ovary and round to rectangular shape testes overlapping intestinal ceaca, vitellarial bands commencing at testicular region or may pre-testicular and have smaller size of eggs.
The flow through a lobed cross-shaped orifice is very complex as many physical phenomena and time scales are involved.
Panicles are cylindrical, dense, often blunt ended, and strongly lobed, similar to N-Si-7.
Lobed, toothed 4- to 8-foot-wide leaves develop on 4-to 6-foot-tall stalks.
Any of various perennial herbs of the genus Anemone, native chiefly to northern temperate regions and having palmately lobed leaves and large flowers with showy sepals.
Hole Hammers feature lobed heads to reduce friction and maximize penetration speed.
Its leaves are three to five lobed and four to ten inches long, they also have an exudate, though a clear one, that may cause allergic reactions.
Their solution may be what Siemens dubs the "infinitely variable electromechanical valve train," which replaces the lobed camshaft with electronic actuators each valve.
Tree species of cool, temperate forests generally have leaves with toothed or lobed margins, whereas moist, evergreen tropical forests contain almost exclusively species with entire-margined leaves (Bailey and Sinnott 1916, Cain and Castro 1959, Gentry 1969, MacArthur 1972, Givnish 1979).
During early phases of growth, both subspecies produce leaves that are superficially similar in shape; except for the first two or three leaves in sororia, these early, "juvenile" leaves are slightly lobed. However, later in the ontogeny of sororia, by the time the first carpellate flower is produced, the "adult" leaves are highly lobed.
Here is what Guy Barter, RHS chief horticulturist recommends: 1 GUELDER ROSE (Viburnum opulus) TRY this tall native quick-growing deciduous shrub with lobed leaves, reminiscent of an acer, with good autumn colour and masses of translucent red berries following white summer flowers.