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...

Birth of a Human Baby
Birth of a Human Baby

Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..

Chemical composition of the body
Chemical Composition of the Body

The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..

Growth Patterns
Growth Patterns

This tutorial describes the sigmoid curve, annual plant growth, tree growth, human growth, and insect growth as the grow..

Freshwater Ecology
Freshwater Ecology

Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..

Gene Regulation in Eukaryotes
Gene Regulation in Eukaryotes

Learn about the general structure of a eukaryotic gene, the transcription factors, and post-transcriptional regulation....

bryophyte - sporophyte and gametophyte
Meiosis and Alternation of Generations

Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..

Related Articles...

No related articles found

See all Related Topics