tetrad
/ˈtɛtɹæd/
Word Rarity
Very rare
Frequency: Zipf frequency 2.06 in modern English
7
Scrabble Score
6
Letters
2
Syllables
5
Unique Chars
Meaning
noun
Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
noun
A group of four haploid and immature pollen grains in tetrahedral fashion produced by meiotic microsporogenesis.
noun
A unit of land area of two by two (that is, four) square kilometres.
noun
A tetravalent atom or radical.
noun
A group of four basis vectors for a four-dimensional manifold in differential geometry.
noun
A chord comprised of four notes; a tetrachord.
Example Sentences
- "Religious movements and cults are often founded on a tetrad of elements: a prophet, a prophecy, a book, and a revelation."
- "They took figures for the abundance of invasive weeds mapped according to the normal grid unit of the 'hectad', or 10 × 10 km square, and then looked at how abundant these species were mapped at a much finer scale – in 'tetrads', or 2 × 2 km squares, inside these hectads."
Etymology
Origin
Word Breakdown
Regional Pronunciation
- American English: /ˈtɛtɹæd/
- British English: /ˈtɛtɹæd/