tetrad
1
8.6
- noun
- /ˈtɛtræd/
:
tetrada
- Quine and others influenced by Tarski directed attention to the purely algebraic issue of whether there might be tetrads that are irreducible to triads.
And there's a very high correlation between the dark tetrad personality traits and left wing authoritarianism.
- And there's a very high correlation between the dark tetrad personality traits and left wing authoritarianism.
- Well, the typical dark tetrad type is very confident and not anxious, OK, so why would that be attractive to women?
- Not feeling remorse is heavy stuff that we see in psychopathy and dark tetrad patterns.
- At the really severe end, we have all the malignant narcissism, psychopathy adjacent, dark tetrad, coercive, scary shit.
- So I think a lot of people end up preferring the either triad or tetrad where they want a family.
Examples
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They number twelve in all, and are divided into three tetrads.
Fiction book (1993) -
Locally, Swanson's creations can be seen onstage with acts like Trace, Ralston Bowles, Tetrad, and Swanson's own band, 13th Hour.
Blog text (14) -
The first tetrad spins to the sky, the second to the earth, and the last to our general state of well-being.
Fiction book (1993) -
So I think a lot of people end up preferring the either triad or tetrad where they want a family.
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In four dimensions, the structure of a PAP space is defined completely by a tetrad vector field.
Blog text (3) -
Meiosis occurs in the sporangia, producing tetrads of spores that are released into the air.
Academic text (2002) -
A tetrad of chairs was arranged around the dining table for the family dinner.
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In mathematics, a tetrad is often used to describe a group of four variables that are related.
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The mathematical concept of a tetrad can help in understanding higher dimensional spaces.
Synonyms
∞
1.0
A number equal to two plus two
∞
1.0
The number that comes after three and before five
30
3.5
A group of four musicians who play or sing together
21
3.2
A group of four people who meet or play together
A set of four related things
The number four
Surface Forms
Morphology
tetrad = tetra (semi-transparent) = tetra + ad
Built from the Greek combining form 'tetra-' (four) and the noun-forming suffix '-ad'; because 'tetra-' is a bound combining form rather than a familiar standalone English word, learners may only partly infer the meaning.
Etymology
Tetrad comes from the Greek part tetra-, which means 'four' and you can remember it from the game Tetris, where many pieces are made of four blocks. So a tetrad is simply a 'group of four'.