Dictionary > Pearl

Pearl

pearl
1. (Science: marine biology, zoology) A shelly concretion, usually rounded, and having a brilliant luster, with varying tints, found in the mantle, or between the mantle and shell, of certain bivalve mollusks, especially in the pearl oysters and river mussels, and sometimes in certain univalves. It is usually due to a secretion of shelly substance around some irritating foreign particle. Its substance is the same as nacre, or mother-of-pearl. Pearls which are round, or nearly round, and of fine luster, are highly esteemed as jewels, and compare in value with the precious stones.
2. Hence, figuratively, something resembling a pearl; something very precious. I see thee compassed with thy kingdom’s pearl. (Shak) And those pearls of dew she wears. (milton)
3. Nacre, or mother-of-pearl.
4. (Science: marine biology) A fish allied to the turbot; the brill.
5. (Science: ornithology) A light-coloured tern.
6. (Science: zoology) One of the circle of tubercles which form the bur on a deer’s antler.
7. A whitish speck or film on the eye.
8. A capsule of gelatin or similar substance containing some liquid for medicinal application, as ether.
9. A size of type, between agate and diamond. This line is printed in the type called pearl. Ground pearl.
(Science: zoology) A crystallized variety of dolomite, having a pearly luster. Pearl white. Basic bismuth nitrate, or bismuth subchloride; used chiefly as a cosmetic. A variety of white lead blued with indigo or Berlin blue.
Origin: OE. Perle, F. Perle, LL. Perla, perula, probably fr. (assumed) L. Pirulo, dim. Of L. Pirum a pear. See Pear, and cf. Purl to mantle.


You will also like...

Chemical effects on plant growth and development
Effect of Chemicals on Growth & Development in Organisms

Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..

Independent Assortment and Crossing Over
Independent Assortment and Crossing Over

This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..

Water Cycle
The Water Cycle

The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

Psychiatry and mental disorders
Psychiatry & Mental Disorders

Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..

Cells in different stages of meiosis
Meiosis – The Genetics of Reproduction

Meiosis is a form of cell division that creates gametes. It is comprised of two divisions that in the end, the resulting..

Young plant growing from the soil.
Soils

Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..

Related Articles...

No related articles found

See all Related Topics