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 Word Definition

1828.mshaffer.comWord [cathetus]

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# cathetus

CATHETUS n. In geometry, a line or radius, falling perpendicularly on another line or surface; as the two sides of a right-angled triangle.

Cathetus of incidence, in catoptries, is a right line drawn from a point of the object, perpendicular to the reflecting line.

Cathetus of reflection, or of the eye, a right line drawn from the eye perpendicular to the reflecting plane.

Cathetus of obliquation, a right line drawn perpendicular to the speculum, in the point of incidence or reflection.

In architecture, a cathetus is a perpendicular line, supposed to pass through the middle of a cylindrical body.

## Evolution (or devolution) of this word [cathetus]

1828 Webster1844 Webster1913 Webster

CATHETUS n. In geometry, a line or radius, falling perpendicularly on another line or surface; as the two sides of a right-angled triangle.

Cathetus of incidence, in catoptries, is a right line drawn from a point of the object, perpendicular to the reflecting line.

Cathetus of reflection, or of the eye, a right line drawn from the eye perpendicular to the reflecting plane.

Cathetus of obliquation, a right line drawn perpendicular to the speculum, in the point of incidence or reflection.

In architecture, a cathetus is a perpendicular line, supposed to pass through the middle of a cylindrical body.

CATH'E-TUS, n. [Gr. καθετος. See Catheter.]

In geometry, a line or radius, falling perpendicularly on another line or surface; as, the two sides of a right-angled triangle. – Encyc. Cathetus of incidence, in catoptrics, is a right line drawn from a point of the object, perpendicular to the reflecting line. Cathetus of reflection, or of the eye, right line drawn from the eye, perpendicular to the reflecting plane. Cathetus obliquation, a right line drawn perpendicular to the speculum, in the point of incidence or reflection. In architecture, cathetus is a perpendicular line, supposed to pass through the middle of a cylindrical body. Also, the center of the Ionic volute. – Encyc.

||Cath"e*tus
1. One line or radius falling perpendicularly on another; as, the catheti of a right-angled triangle, that is, the two sides that include the right angle.

Barlow.
1828 Webster1844 Webster1913 Webster

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Cathetus

CATHETUS noun In geometry, a line or radius, falling perpendicularly on another line or surface; as the two sides of a right-angled triangle.

CATHETUS of incidence, in catoptries, is a right line drawn from a point of the object, perpendicular to the reflecting line.

CATHETUS of reflection, or of the eye, a right line drawn from the eye perpendicular to the reflecting plane.

CATHETUS of obliquation, a right line drawn perpendicular to the speculum, in the point of incidence or reflection.

In architecture, a cathetus is a perpendicular line, supposed to pass through the middle of a cylindrical body.

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### Word of the Day

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

SUNG, pret. and pp. of sing.

While to his harp divine Amphion sung.

### Noah's 1828 Dictionary

First dictionary of the American Language!

Noah Webster, the Father of American Christian education, wrote the first American dictionary and established a system of rules to govern spelling, grammar, and reading. This master linguist understood the power of words, their definitions, and the need for precise word usage in communication to maintain independence. Webster used the Bible as the foundation for his definitions.

This standard reference tool will greatly assist students of all ages in their studies.

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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