Etymology
The word "deferent" comes from the Latin word "deferre," which means "to carry down or away."
Meaning
A deferent is a path or orbit in the sky along which a celestial body, such as a planet or moon, moves. It is often used in astronomy to describe the path of a celestial body around another body, such as the Earth around the Sun.
Origin
The concept of the deferent was originally developed by ancient astronomers to explain the observed motions of the planets and stars. In the geocentric model of the universe, which was prevalent in ancient times, the Earth was believed to be the center of the universe and all other celestial bodies moved around it. Astronomers needed a way to explain the apparent retrograde motion of the planets, which is the phenomenon where planets sometimes appear to move backwards in their orbits. They proposed that the planets moved along a circular path called a deferent, which was itself centered on a second circular path called an epicycle. The epicycle was centered on the Earth. The combination of the deferent and epicycle allowed astronomers to explain the apparent retrograde motion of the planets.
The concept of the deferent was later abandoned as astronomers developed more accurate models of the universe. However, the term "deferent" is still used in astronomy to describe the path of a celestial body around another body.
Etymology and Meaning The word defer comes from the Latin word de meaning away or
Etymology Origin Late Middle English describing a person from Late Latin deferentia
Etymology Middle English from Anglo Norman deferrence from Old French desférence fr
Etymology The word deferent comes from the Latin word deferre which means to carry
Etymology The word parliament comes from the Old French word parlement which is der
Etymology Middle English disease from Old French desese from Latin dis aese not
Etymology The word genesis is derived from the Greek word γένεσις génesis
Etymology Greek dia through bētēs passing through Meaning A chronic meta
Etymology Latin seditionem Root words se apart ire to go Meaning In
Etymology Custom noun and adjective From Middle English custume ultimately derived
Etymology Middle English bafel to confuse or bewilder Old French baffler to del
Etymology The word discretion comes from the Middle English word discrecioun which
Etymology The word bluff has several possible origins French bluffer to deceive
