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In my view, the Christian religion is the most important and one of the first things in which all children, under a free government ought to be instructed... No truth is more evident to my mind than that the Christian religion must be the basis of any government intended to secure the rights and privileges of a free people.
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1828 Noah Webster Dictionary
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1828.mshaffer.com › Word [prism]

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prism

PRISM, n. [Low L. prisma; Gr. to cut with a saw, to press or strain.] A solid whose bases or ends are any similar, equal and parallel plane figures, and whose sides are parallelograms.

A prism of glass is one bounded by two equal and parallel triangular ends and three plain and well polished sides which meet in three parallel lines, running from the three angles of one end to the three angles of the other end.


Evolution (or devolution) of this word [prism]

1828 Webster1844 Webster1913 Webster

PRISM, n. [Low L. prisma; Gr. to cut with a saw, to press or strain.] A solid whose bases or ends are any similar, equal and parallel plane figures, and whose sides are parallelograms.

A prism of glass is one bounded by two equal and parallel triangular ends and three plain and well polished sides which meet in three parallel lines, running from the three angles of one end to the three angles of the other end.

PRISM, n. [Fr. prisme; Low L. Sp. and It. prisma; Gr. πρισμα, from πριω, to cut with a saw, to press or strain; Russ. pru.]

A solid whose bases or ends are any similar, equal and parallel plane figures, and whose sides are parallelograms. – D. Olmsted. A trihedral prism of glass is one bounded by two equal and parallel triangular ends and three plain and well polished sides which meet in three parallel lines, running from the three angles of one end to the three angles of the other end. – Newton.


Prism
  1. A solid whose bases or ends are any similar, equal, and parallel plane figures, and whose sides are parallelograms.

    * Prisms of different forms are often named from the figure of their bases; as, a triangular prism, a quadrangular prism, a rhombic prism, etc.

  2. A transparent body, with usually three rectangular plane faces or sides, and two equal and parallel triangular ends or bases; -- used in experiments on refraction, dispersion, etc.
  3. A form the planes of which are parallel to the vertical axis. See Form, n., 13.

    Achromatic prism (Opt.), a prism composed usually of two prisms of different transparent substances which have unequal dispersive powers, as two different kinds of glass, especially flint glass and crown glass, the difference of dispersive power being compensated by giving them different refracting angles, so that, when placed together so as to have opposite relative positions, a ray of light passed through them is refracted or bent into a new position, but is free from color. -- Nicol's prism, Nicol prism. [So called from Wm. Nicol, of Edinburgh, who first proposed it.] (Opt.) An instrument for experiments in polarization, consisting of a rhomb of Iceland spar, which has been bisected obliquely at a certain angle, and the two parts again joined with transparent cement, so that the ordinary image produced by double refraction is thrown out of the field by total reflection from the internal cemented surface, and the extraordinary, or polarized, image alone is transmitted.

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Prism

PRISM, noun [Low Latin prisma; Gr. to cut with a saw, to press or strain.] A solid whose bases or ends are any similar, equal and parallel plane figures, and whose sides are parallelograms.

A prism of glass is one bounded by two equal and parallel triangular ends and three plain and well polished sides which meet in three parallel lines, running from the three angles of one end to the three angles of the other end.

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Word of the Day

importance

IMPORT'ANCE, n.

1. Weight; consequence; a bearing on some interest; that quality of any thing by which it may affect a measure, interest or result. The education of youth is of great importance to a free government. A religious education is of infinite importance to every human being.

2. Weight or consequence in the scale of being.

Thy own importance know.

Nor bound thy narrow views to things below.

3. Weight or consequence in self-estimation.

He believes himself a man of importance.

4. Thing implied; matter; subject; importunity. [In these senses, obsolete.]

Random Word

heaven

HEAVEN, n. hev'n.

1. The region or expanse which surrounds the earth, and which appears above and around us, like an immense arch or vault, in which are seen the sun, moon and stars.

2. Among christians, the part of space in which the omnipresent Jehovah is supposed to afford more sensible manifestations of his glory. Hence this is called the habitation of God, and is represented as the residence of angels and blessed spirits. Deut.26.

The sanctified heart loves heaven for its purity, and God for his goodness.

3. Among pagans, the residence of the celestial gods.

4. The sky or air; the region of the atmosphere; or an elevated place; in a very indefinite sense. Thus we speak of a mountain reaching to heaven; the fowls of heaven; the clouds of heaven; hail or rain from heaven. Jer.9. Job.35.

Their cities are walled to heaven. Deut.1.

5. The Hebrews acknowledged three heavens; the air or aerial heavens; the firmament in which the stars are supposed to be placed; and the heaven of heavens, or third heaven, the residence of Jehovah.

6. Modern philosophers divide the expanse above and around the earth into two parts,the atmosphere or aerial heaven, and the etherial heaven beyond the region of the air, in which there is supposed to be a thin, unresisting medium called ether.

7. The Supreme Power; the Sovereign of heaven; god; as prophets sent by heaven.

I have sinned against heaven. Luke 15.

Shun the impious profaneness which scoffs at the
institution of heaven.

8. The pagan deities; celestials.

And show the heavens more just.

9. Elevation; sublimity.

O! for a muse of fire, that would ascend

The brightest heaven of invention.

10. Supreme felicity; great happiness.

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No other dictionary compares with the Webster's 1828 dictionary. The English language has changed again and again and in many instances has become corrupt. The American Dictionary of the English Language is based upon God's written word, for Noah Webster used the Bible as the foundation for his definitions. This standard reference tool will greatly assist students of all ages in their studies. From American History to literature, from science to the Word of God, this dictionary is a necessity. For homeschoolers as well as avid Bible students it is easy, fast, and sophisticated.


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