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tetraethylmethane 

A chemical compound that looks like swastika when properly wound. Propper IUPAC name is 3,3-diethylpenthane.
A: Look that sign over there! Goddamn neo-nazis!
B: It is tetraethylmethane, you dumbass.
tetraethylmethane by Tibor DP November 2, 2007

tentramel 

A dessert that consists out of a mixture of tennis biscuits and Ultra Mel custard
This afternoon, we ate tentramel for dessert
tentramel by mahlubi June 3, 2017

tetraethyllead (TEL) 

An organolead compound with the formula Pb(C2H5)4.
Tetraethyllead (TEL) is a fuel additive, first being mixed with gasoline beginning in the 1920s as a patented octane rating booster that allowed engine compression to be raised substantially.

Tetraëteris 

A tetraëteris is the Greek name for the period in 4 tropical years where the Moon phase occurs 2 weeks earlier, defined as 49 synodic months, 52.961595389901795 sidereal months, 53.174596199249 draconic months, 52.513969931831795 anomalistic months, and 1,446.998810185187 days.

Though if you intercalate it, you get 50 synodic months, 54.04244427541 sidereal months, 54.25979204005 draconic months, 53.58568360390999 anomalistic months, and 1,476.52939814815 days.

If you go halfway between 49 and 50 synodic months, you get 49 1/2 synodic months, which’s 53.5020198326559 sidereal months, 53.717194119649506 draconic months, 53.0498267678709 anomalistic months, and 1,461.7641041666686 days, which makes up half of an octaëteris, leading from a new/full moon to a full/new moon less than 1 day later.
Which’s just about 4 full synodic revolutions of Uranus, and leads from a new/full moon to a full/new moon within 15 days later.

The tetraëteris has been used for the Olympic games in that if the Olympic games of a games occurred 49 synodic months after the last events, then the next games would occur 50 synodic months later, then 49 more later, and then 50, vice versa, as 49 + 50 = 99 synodic months, making an octaëteris.
Ben: If we didn't have COVID-19, the Tokyo Summer Olympics would've occurred in 2020.
Gregory: Well yeah.
Ben: Because the French Summer Olympics is happening between July 26 and August 11 in 2024.
Gregory: Ikr?
Ben: Because the Greeks knew the Moon was useful for calculating the Olympics.
Gregory: How do you know that?
Ben: Because they used the tetraëteris and octaëteris calendars.
Gregory: Interesting.
Ben: Well the London Summer Olympics took place between July 27 and August 12th in 2012 and the Rio Summer Olympics took place between August 5 and 21 in 2016.
Gregory: Looks like modern adjustments for the Olympic calendars.
Ben: Yeah.
Tetraëteris by gregben October 2, 2023

Tentrietic

Something/Someone experimental, sparking anemonia, reaching outside the box, exploring uncharted or undescribable emotion.

Mostly used when the subject is receiving praise or is deemed inspiring.
This new song I like feels really tentrietic, I can't really describe it.
Tentrietic by thedemster January 26, 2026
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.

Man, I just watched the funniest nutshot video ever.
Nutshot by Uberflaven March 1, 2009
Word of the Day on June 26, 2026