noun

tet

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Tet (noun) means Short for tetralogy of Fallot, a congenital heart defect involving four related structural problems in the heart. Example: “The infant was diagnosed with tet shortly after birth and scheduled for surgery.”

noun

Short for tetralogy of Fallot, a congenital heart defect involving four related structural problems in the heart.

"The infant was diagnosed with tet shortly after birth and scheduled for surgery."

A tetrahedron, or a tetrahedral unit used in engineering and 3D modeling calculations.

"The mesh was built from thousands of tiny tets rather than cube-shaped elements."

Short for tetra, a small brightly colored freshwater aquarium fish.

"He added a school of tets to brighten up the community tank."

How to use tet

Learner’s notes

In plain EnglishA short technical clipping that means different things depending on context: a heart condition, a 3D shape, or a small fish.

Common mistake

Don't confuse this technical clipping with "Tet," the capitalized name of the Vietnamese New Year festival and the wartime Tet Offensive — those are unrelated proper nouns.

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C2 · Advanced serendipity Fortunate discoveries made entirely by accident.

Gen Z slang rizz Charm — the ability to attract a romantic interest.

B2 · Intermediate empathy The capacity to share another person’s feelings.

C1 · Advanced nonchalant Casually calm and relaxed; unconcerned.

Internet slang delulu Delusional — believing something against the odds.

Etymology nostalgia Greek nostos “return home” + algos “pain”.

C2 · Advanced serendipity Fortunate discoveries made entirely by accident.

Gen Z slang rizz Charm — the ability to attract a romantic interest.

B2 · Intermediate empathy The capacity to share another person’s feelings.

C1 · Advanced nonchalant Casually calm and relaxed; unconcerned.

Internet slang delulu Delusional — believing something against the odds.

Etymology nostalgia Greek nostos “return home” + algos “pain”.

Word forms

Plural: tets

Test yourself on “tet” A quick quiz — meaning, synonyms & usage →

Fill the gap

Can you complete this real example?

The infant was diagnosed with _____ shortly after birth and scheduled for surgery.

Etymology

A clipped form of "tetralogy," "tetrahedron," or "tetra," depending on the field.

Frequently asked questions

What does “tet” mean?

The word “tet” means short for tetralogy of Fallot, a congenital heart defect involving four related structural problems in the heart. In plain terms, a short technical clipping that means different things depending on context: a heart condition, a 3D shape, or a small fish.

How do you use “tet” in a sentence?

Here is “tet” used in a sentence: “The infant was diagnosed with tet shortly after birth and scheduled for surgery.”

What part of speech is “tet”?

“Tet” is a noun.

How many meanings does “tet” have?

“Tet” has 3 distinct senses listed in this dictionary. The most common is: short for tetralogy of Fallot, a congenital heart defect involving four related structural problems in the heart.