crater

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crater

 [kra´ter]
an excavated area surrounded by an elevated margin, such as is caused by ulceration.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

cra·ter

(krā'ter),
The most depressed, usually central portion of an ulcer.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Caldera Medical will sponsor skilled American surgeons to provide the best available treatment to underprivileged women.
Caption: Naturally occurring concretelike rock allowed the ground around the volcanic Campi Flegrei caldera in Italy to rise without bursting, new research finds.
“As you can see, Caldera is very selective when it comes to this award.
Whitewashed buildings, domed roofs, little churches, rugged cliffs, the amazing blues of the sky and the ocean, and the fantastic backdrop of the caldera itself.
Belo said Caldera would stand for reelection as a Class II director at the company's annual meeting on May 18.
A signed fence on Rabbit Ridge delineates Park Service land from Valles Caldera National Preserve, two separately managed parcels that have something in common: The ash spewed in one of Valles Caldera's eruptive fits created Bandelier's tuff, the chalky stone that ancestral Puebloans carved into dwellings.
("Capricorn") , a capital pool company, is pleased to convey the announcement by Caldera Geothermal Inc ("Caldera") that Caldera intends to complete a best-efforts brokered private placement (the "Offering") for up to $5 Million, on a subscription receipts basis.