Dictionary > Zenith


1. That point in the visible celestial hemisphere which is vertical to the spectator; the point of the heavens directly overhead; opposed to nadir. From morn To noon he fell, from noon to dewy eve, A summer’s day; and with the setting sun Dropped from the zenith, like a falling star. (milton)
2. Hence, figuratively, the point of culmination; the greatest height; the height of success or prosperity. I find my zenith doth depend upon A most auspicious star. (Shak) This dead of midnight is the noon of thought, And wisdom mounts her zenith with the stars. (Mrs. Barbauld) It was during those civil troubles . . . This aspiring family reached the zenith. (Macaulay) zenith distance.
(Science: astronomy) A telescope specially designed for determining the latitude by means of any two stars which pass the meridian about the same time, and at nearly equal distances from the zenith, but on opposite sides of it. It turns both on a vertical and a horizontal axis, is provided with a graduated vertical semicircle, and a level for setting it to a given zenith distance, and with a micrometer for measuring the difference of the zenith distances of the two stars.
Origin: oe. Senyth, OF. Cenith, f. Zenith, sp. Zenit, cenit, abbrev. Fr. Ar. Samt-urras way of the head, vertical place; samt way, path – al the – ras head. Cf. Azimuth.

You will also like...

Sensory systems
Sensory Systems

A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..

Growth and Plant Hormones
Growth and Plant Hormones

Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

kinesin motor proteins transporting molecules across microtubules
Movement of Molecules Across Cell Membranes

Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..

Biological Cell Defense
Biological Cell Defense

Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

Genetics – Lesson Outline & Worksheets
Genetics – Lesson Outline & Worksheets

  Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics – Definition: Heredity and ..

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..

Related Articles...

No related articles found

See all Related Topics