Associations to the word «Tetrad»

Wiktionary

TETRAD, noun. A group of four things.
TETRAD, noun. (cartography) A unit of land area of two by two (that is, four) square kilometres.
TETRAD, noun. (chemistry) A tetravalent atom or radical.
TETRAD, noun. (biology) Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
TETRAD, noun. (biology) A group of four haploid and immature pollen grains in tetrahedral fashion produced by meiotic microsporogenesis.

Dictionary definition

TETRAD, noun. The cardinal number that is the sum of three and one.

Wise words

Love. Fall in love and stay in love. Write only what you love, and love what you write. The key word is love. You have to get up in the morning and write something you love, something to live for.
Ray Bradbury