tetrad
Set of four
A tetrad is a group of four.
In biology, it refers specifically to a group of four cells produced by meiosis, or to the four-stranded structure formed when paired chromosomes duplicate during cell division.
In chemistry, a tetrad is an element with a valence of four.
More generally, any set of four related things: the tetrad of earth, air, fire, and water.
Ensemble of four
- quadrupleMultiplied by four
- quaternaryFourth-order or four-bonded
- fourNumber after three
- quadrupletOne of four twins
quadrumvirate · fourfold · quadripartite · quad · square
DNA strand carrying genes
- homologousHaving shared evolutionary origin
- synapsisChromosomal pairing in meiosis
- bivalentHaving valence of two
- chiasmaPoint where structures cross
recombination · gametes · haploid · diploid · genetics · alleles · segregation · prophase
Ancient Greek mathematician
- quaternionHypercomplex number with four components
- numerologyMystical significance of digits
- mysticismPursuit of divine union
- JungAnalytical psychology founder
archetype · mandala · wholeness · symbolism · earth · water · fire · air
Notes sounded simultaneously
- triadGroup of three
- harmonyAgreement or musical blend
- pitchFrequency of sound
- intervalDuration between two points
consonance · tonality · voicing · inversion · root · progression · tonic · dominant
Four-sided closed figure
- tetrahedronFour-faced polyhedron
- vertexPoint where edges converge
- polygonMultisided plane figure
- planeWinged flying vehicle
vertices · edges · faces · platonic · polyhedron · three-dimensional · triangular · pyramid
quartet
Ensemble of four
- quadrupleMultiplied by four
- quaternaryFourth-order or four-bonded
- fourNumber after three
quadruplet · quadrumvirate · fourfold · quadripartite · quad · square
chromosome
DNA strand carrying genes
- homologousHaving shared evolutionary origin
- synapsisChromosomal pairing in meiosis
- bivalentHaving valence of two
chiasma · recombination · gametes · haploid · diploid · genetics · alleles · segregation · prophase · anaphase
Pythagoras
Ancient Greek mathematician
- quaternionHypercomplex number with four components
- numerologyMystical significance of digits
- mysticismPursuit of divine union
Jung · archetype · mandala · wholeness · symbolism · earth · water · fire · air
chord
Notes sounded simultaneously
interval · consonance · tonality · voicing · inversion · root · progression · tonic · dominant · resolution
quadrilateral
Four-sided closed figure
- tetrahedronFour-faced polyhedron
- vertexPoint where edges converge
- polygonMultisided plane figure
plane · vertices · edges · faces · platonic · polyhedron · three-dimensional · triangular · pyramid · spatial
element
Basic substance or factor
grouping · bonding · molecular · atomic · compound · configuration
- number wordspair, duo, trio, quartet, quintet
- foursfour elements, four directions, four corners, four suits, four horsemen
- microbiologybacteria, bacterium, microbe, microbes, microorganisms
- chromosomeschromosomes, chromosome, centromere, chromatin, telomerase
- McLuhanglobal village, visual space, retrieval, obsolescence, enhancement
- reproductionreproduction, birth, baby, egg, sperm
- tetralogy of FallotQuadruple congenital heart anomaly
tetralogy, tetras, tetrapod, tetrahedral, tetrameter, tetraplegia, tetravalent