Sine is most commonly used in academic niches such as mathematics, physics, and trigonometry. 

People use it in casual conversation based on their academic meanings to refer to things’ smooth, wave-like, and periodic movement, but not widely.

In today’s guide, we will discuss the possible meaning, origin, and usage of the slang based on the context. 

Origin: 

In the 12th century, it originated from the Medieval Latin word Sinus means curve, bend, or bosom. Sine was first time used in 1593. 

Sine Meaning in Casual Conversation:

Informally, it is used humorously and playfully in-jokes with double meanings. People use it in their chat to modify a word or phrase. 

Examples: 

• Your friendship is like a sine. 

In this example, sine means fluctuations in friendship due to life’s ups and downs. 

• Mosan always gave sine ideas.

In this example, sine describes the ideas full of twist-like wave motion. 

• Look at her sine smile. She looks beautiful while smiling. 

In this example, sine means the curved smile. 

Mathematical: 

Mathematically it has several definitions;

• A trigonometric function in a right-angled triangle is the ratio of the length of the opposite side to that of the hypotenuse.
• A function in a circle centered at the origin of a Cartesian coordinate system is the ratio of the ordinate of a point on the circumference to the radius of the circle.

Coordinate Terms of Sine:

• Cosine
• Tangent
• Cotangent
• Secant
• Cosecant

Terms Derived From Sine:

• Cynical
• Arced sine
• Covered sine
• Formula sine
• Sine wave 
• Sine rule 
• Hyperbolic rule 
• Inverse sine 

Gaming and Coding:

Game developers and coding sine are used to describe and produce smooth wave-like oscillations in designs and animations. They use sine to make their graphics more presentable. 

The Popularity of Internet Slang “Sine”: 

In this era of slang, where people convey several meanings with one word, new slang is on trend. 

However, sine is not yet gaining widespread popularity in digital communication as an emerging internet slang.