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# tetrad

«tetrad» in Mova's judaism dictionary: **A group of four things** — its meaning for a pupil, its sense in the lessons and examples.

### part of speech

noun

### meaning for a pupil

A group of four things. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/judaism/T/tetrad/#m1)

### sense in the lessons

Interpretation: Writers on Sefer Yetzirah connect the four with the four elements, and the ancient Pythagoreans thought it a perfect number.

### examples

- Note the subdivision of the Decad into the Tetrad — four elements ; and the Hexad — six dimensions of space. (Sefer Yetzirah, Westcott 1893) [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/judaism/T/tetrad/#x1)
- The Tetrad, Tctractys, (jualer- nian number, is the most peit'ect. (Mordell, The Origin of Letters and Numerals according to Sefer Yetzirah (1914)) [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/judaism/T/tetrad/#x2)

### note

A record of the Judaism dictionary, written from the corpus.

### Trees and pragmatics

[Every meaning and example of «tetrad» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/judaism/T/tetrad/), each sentence with its dependency tree and frames.