tetrachad 

An informal compliment used to call someone impeccably and mentally strong🗿

When James finished his college graduation speech, his friends started to call him tetrachad

tetrachad by Neurochad September 9, 2023

terachad 

A handsome, rich, and confident guy who is 1000 times more alpha than a gigachad.

Jason Momoa is tall and handsome, a super rich actor, and internationally famous. He is a true Terachad, unlike some other celebrities who are mere gigachads.

terachad by Chadlite April 7, 2019

Tetrapharmakos 

(τετραφάρμακος), or "the four-part cure," is the Greek philosopher Epicurus' (341 BC, Samos – 270 BC, Athens) remedy for leading the happiest possible life. The "tetrapharmakos" was originally a compound of four drugs (wax, tallow, pitch and resin); the word has been used metaphorically by Epicurus and his disciples to refer to the four remedies for healing the soul.

Tetrapharmakos, the four-part cure;

Don't fear God,
Don't worry about death;
What is good is easy to get, and
What is terrible is easy to endure

-

Ἄφοβον ὁ θεός,
ἀνύποπτον ὁ θάνατος
καὶ τἀγαθὸν μὲν εὔκτητον,
τὸ δὲ δεινὸν εὐκαρτέρητον

Tetrapharmakos by khalyd September 9, 2012

Tetrahedral

An insult that has no meaning but will mentally obliterate anyone it is used against. Only use if you plan on never talking to the victim again.

Chad: "John you are such an absolute fucking tetrahedral"
John: *kills himself*

Tetrahedral by Trump gaming October 15, 2020

Carbon Tetrachloride 

Carbon Tetrachloride is a toxic but very useful solvent used in brominating thiophene to 2-Bromothiophene using bromine. Carbon Tetrachloride is synthesized by adding chlorine to chloroform and iron powder. Carbon Tetrachloride is toxic to the kidneys and liver.
Properties
Chemical formula
CCl4
Molar mass
153.81 g/mol
Appearance
Colourless liquid
Odor
Sweet, chloroform-like odor
Density
1.5867 g/cm^3 (liquid)
1.831 g/cm^3 at −186 °C (solid)
1.809 g/cm^3 at −80 °C (solid)
Melting point
−22.92 °C (−9.26 °F; 250.23 K)
Boiling point
76.72 °C (170.10 °F; 349.87 K)
Solubility in water
0.097 g/100 mL (0 °C)
0.081 g/100 mL (25 °C)
Solubility
Soluble in alcohol, ether, chloroform, benzene, naphtha, CS2, formic acid

I brominated thiophene to 2-Bromothiophene with bromine in Carbon Tetrachloride.

Carbon Tetrachloride by CognitiveFuel January 31, 2023

Tetrahydrocannabinol 

Tetrahydrocannabinol (THC), is the main psychoactive ingredient in the Cannabis Sativa plant that gets a user 'High'.
It's scientific name is Δ9-tetrahydrocannabinol (delta-9-tetrahydrocannabinol), Δ¹-tetrahydrocannabinol (using an older numbering scheme), or dronabinol, is the main psychoactive substance found in the Cannabis plant. It was isolated by Raphael Mechoulam and Yechiel Gaoni from the Weizmann Institute in Rehovot, Israel in 1964. In pure form it is a glassy solid when cold and becomes viscous and sticky if warmed. THC has a very low solubility in water, but a good solubility in most organic solvents such as pure ethanol or hexane.

Scientist: Man, that pot had a high tetrahydrocannabinol potency!

Tetrahydrocannabinol by hdsk September 10, 2008

Tetrahydrofuran 

Tetrahydrofuran (THF) is a cyclic ether (heterocyclic compound) with a 5-member ring and an oxygen atom inside. Its formula is C4H8O

We need ionic compounds for this reaction! Use tetrahydrofuran or it won't dissolve!

Tetrahydrofuran by chemguide August 10, 2019