ridge

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ridge

1. a long narrow raised land formation with sloping sides esp one formed by the meeting of two faces of a mountain or of a mountain buttress or spur
2. Anatomy any elongated raised margin or border on a bone, tooth, tissue membrane, etc.
3. 
a. the top of a roof at the junction of two sloping sides
b. (as modifier): a ridge tile
4. the back or backbone of an animal, esp a whale
5. Meteorol an elongated area of high pressure, esp an extension of an anticyclone

ridge

(scarp) See lobate ridge; wrinkle ridges.

Ridge

The horizontal lines at the junction of the upper edges of two sloping roof structures.

Ridge

 

a linearly extended upland, often with soft, rounded parts. Ridges are usually the remnants of mountain ranges that have been greatly eroded and then slightly uplifted (for example, the Timan Ridge and the Donets Ridge).

ridge

[rij]
(architecture)
The line on which the sides of a sloping roof meet.
(geology)
An elongate, narrow, steep-sided elevation of the earth's surface or the ocean floor.
(meteorology)
An elongated area of relatively high atmospheric pressure, almost always associated with, and most clearly identified as, an area of maximum anticyclonic curvature of wind flow. Also known as wedge.

ridge

1. The horizontal line at the junction of the upper edges of two sloping roof surfaces.
2. The internal angle or nook of a vault.
References in periodicals archive ?
Left upper anterior gingival mucosal mass, 6 mm, from a 2week-old white girl, demonstrating attenuated overlying squamous epithelium with absent rete ridges (hematoxylin-eosin, original magnification X2).
4) In the fully developed lesions of psoriasis the histologic picture is characterized by: 1) acanthosis with regular elongation of the rete ridges and thickening in the lower portion 2) thinning of the suprapapillary epithelial layers 3) pallor of the upper layers of the epidelium 4) a diminished to absent granular layer 5) confluent parakeratosis 6) the presence of Munro microabscesses (parakeratosis with neutrophils) 7) elongation and edema of the connective tissue papillae and 8) tortuous capillaries.
The classic epidermal hyperplasia of a lentigo simplex, with thin, elongated rete ridges, may be absent.
Skin biopsy revealed subepidermal separation accompanied by thinning of the epidermis with loss of rete ridges and the presence of dermal edema.
Acanthosis, papillomatosis, hyperkeratosis of the epidermis, and elongation of the rete ridges were evident, lathe dermis, thick bands of collagen were also noted.
Histopathologic examination of a skin biopsy from the comedonal and pigmented lesions on back of the neck of the proband in family 1 revealed a dilated hair follicle with follicular plugging and acanthosis with downward elongations of rete ridges in a reticulated or fenestrated pattern and a few horn cysts [Figure 2]h.
Figure 3: 10x view showing lichen nitidus--claw shaped elongation of epidermal rete ridges encircling well defined inflammatory infiltrate--claw clutching the ball appearance.
Figure 4 Photomicrograph showing hyperkeratosis, irregular acanthosis and elongation of rete ridges in epidermis and ectatic dilated vessels with mild perivascular chronic infiltrate in dermis [H and E, X100 (A), X 400 (B)].