shell

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shell

(shel),
An outer covering.

shell

Etymology: AS, scell
1 a hard outer protective covering that encloses material.
2 a principal energy level occupied by an electron in an atom.

shell

(shel)
An outer covering.

shell

any hard outer covering, such as the carapace of turtles and tortoises, the exoskeleton of crustaceans, the calcareous plates of echinoderms, the outermost membranes of an egg, the skeleton of Foraminifera or the mantle secretions of molluscs.

impression, eye

A negative form or replica of the anterior part of the eye. A substance with rapid gelling properties is held in contact with the eye until gelled. This impression (or mould) is then used in the preparation of a positive model called a cast (or casting) of the anterior part of the eye: it is made by filling the impression with a material containing a plaster of Paris base which hardens to artificial stone. Using this cast a shell of a scleral contact lens is produced with optimum shape of the back surface. Syn. impression; impression moulding; mould; ocular impression.
References in periodicals archive ?
Sheller was the first to call attention to the link between Risperdal and gynecomastia and contends the drug should never have been approved for children.
C against Qasim Ali, Shoukat Ali and Ansar Ali owners of the under construction sheller and have arrested Qasim Ali while two others manage their good escape.
The college will draw water from the canal for its cooling systems and return the water to the canal "slightly warmer and a lot cleaner," according to Mr Sheller.
I was excited when I found the sheller from Embarcadero Home Cannery, and I gave it to him for Christmas because he normally lets the nuts cure on a covered patio until after Christmas each year.
Sheller sounds like the proverbial pot calling the cattle black.
Sheller, a sociologist, is no less than a committed analyst using the sword of Caribbean Studies equally against the history of white European consumerism and against the defiling pens of travel--the hacks who promote the latest version of abhorrent consumption, an abomination by which most of the region now earns a precarious living, tourism.
Adams joined lawyer Stephen Sheller to develop the theory, which Sheller said avoids preemption by the federal cigarette labeling law.
As Chief Administrative Officer, Sheller will be responsible for the day-to-day oversight of certain corporate functions, including Legal, Human Resources, Worldwide Information Systems, Communications & Public Affairs, and Health, Safety & Environment.
They were identified as Muhammad Ajmal Arain of Shaukat Hayat Colony, Allah Ditta of Sheller Colony (PS Bhagtanwala), Anwar Musalli of Mateela (PS Kotmomin), Javid Musalli of Bhabhra (PS Mela) involved in drug peddling, Jahanzeb Pathan (PS Sajid Shaheed), Mazhar Abbas (PS Urban Area), Khawaja Tariq (PS Satellite Town), Asif Chadhar, Taufique Musalli (PS Jhal Chakian), Shahid Iqbal, Ijaz (PS Saddar Bhalwal), Muhammad Ansar, Mazhar Haral (PS Kotmomin), Ghulam Muhammad Ranjha (PS Mela) for carrying weapons without authority.
MAKING A POINT: Tutor Micah West, right, and Ray Sheller, second right, project vision manager for Kirklees College, with other members of staff and students(PW140311Ecollege-01)
Christopher Sheller of Prudential Douglas Elliman represented the buyer.