define tetra
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- Tetra-. a combining form or prefix signifying four, as in tetrabasic, tetrapetalous. Tetra-. a combining form (also used adjectively) denoting four proportional or combining parts of the substance or ingredient denoted by the term to which it is prefixed, as in tetra-chloride, tetroxide.
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Definitions &Translations Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Tetra-. a combining form or prefix signifying four, as in tetrabasic, tetrapetalous. 2  Tetra-. a combining form (also used adjectively) denoting four proportional or combining parts of the substance or ingredient denoted by the term to which it is prefixed, as in tetra-chloride, tetroxide.
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- The word tetrapod means four feet and includes all species alive today that have four feet — but this group also includes many animals that don't have four feet. That's because the group includes all the organisms (living and extinct) that descended from the last common ancestor of amphibians, reptiles, and mammals.
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tetra n. Any of numerous small colorful tropical freshwater fishes chiefly of the family Characidae, such as the neon tetra, often kept in home aquariums.
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- fet·ter. n. 1. A device, usually one of a pair of rings connected to a chain, that is attached to the ankles or feet to restrict movement. 2. often fetters Something that serves to restrict; a restraint: the fetters of tyranny.
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Tetra Tetra is no longer a taxonomic, phylogenetic term. It is short for Tetragonopterus, a genius name formerly applied to many of these fish, which is Greek for square-finned (literally, four-sided-wing).
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Tetraethyllead Tetraethyllead (commonly styled tetraethyl lead), abbreviated TEL, is an organolead compound with the formula (CH3CH2)4Pb. TEL was mixed with gasoline (petrol) beginning in the 1920s as a patented octane rating booster that allowed engine compression to be raised substantially, which in turn increased vehicle performance or fuel economy.
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TETRA (Terrestrial Trunked Radio) TETRA, which originally stood for Trans-European Trunked Radio, was renamed Terrestrial Trunked Radio after ETSI found widespread interest in the TETRA standards beyond Europe's geographic borders.
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tetra Origin and Etymology of tetra. by shortening from New Latin Tetragonopterus, former genus name, from Late Latin tetragonum quadrangle + Greek pteron wing — more at tetragonal, feather.
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Tetrad (meiosis) The tetrad is the four spores produced after meiosis of a yeast or other Ascomycota, Chlamydomonas or other alga, or a plant. After parent haploids mate, they produce diploids. Under appropriate environmental conditions, diploids sporulate and undergo meiosis. The meiotic products, spores, remain packaged in the parental cell body to produce the tetrad.
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- A tetrapod is any vertebra organismal with four limbs. In that case humans are considered tetrapods because we have four limbs: Our two feet and arms makes us a tetra pod.Also frogs, t.rex, and mouse are considered tetra pods.mphibians, reptiles, birds and mammals are all tetrapods; even snakes and oth … er limbless reptiles and amphibians are tetrapods because they descended from animals which had four limbs. Whales and other cetaceans are also tetrapods because they are mammals have two front limbs and the two hind limbs are vestiges.
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- Tantra is the transformatin of vital energy in all its permutations ultimately toward the goal of spiritual attundement and enlightenment. In this context sexual relations become sacred. Tantra is not well understood in the western world, but is a key to healthy living and awareness that can transform you into the person you were meant to be. The Sanskrit word Tantra is related to the concept of weaving and expansion- it derives from 'tan', meaning to expand, spin out, and weave.
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- Definition of testosterone from the Collins English Dictionary Demonstratives Demonstratives are used to specify the distance of something in space or time in relation to the speaker.
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tetanus (tět'n-əs) An acute, often fatal infectious disease caused by the bacterium Clostridium tetani, which usually enters the body through a wound and produces a toxin that affects nerve conduction. Tetanus is characterized by painful, spasmodic contractions of voluntary muscles, especially of the jaw.
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tetrad tetrad. n. 1. (Mathematics) a group or series of four. 2. (Mathematics) the number four. 3. (Biology) botany a group of four cells formed by meiosis from one diploid cell.
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What is the Te (De) in Taoism? Te (De) means virtue or power. It comes from the second section of the book starting with chapter 38 which speaks about the virtue and power of the masters. VIrtue and power comes from not trying to do good or powerful things but from simply being.
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Black neon tetra This species is of typical elongated tetra appearance; it is of plain basic coloration but with two distinct, adjacent longitudinal stripes, white above black. The eye has two thin but distinctive color bands across the top, red above yellow. It grows to a maximum overall length of approximately 4 cm (1.6 in).
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When does Walt Disney World start decorating for Halloween? When does Walt Disney World start decorating for Halloween? Halloween decorations in 2016 will likely start going up toward the end of August, because they need to be up by the first Mickey’s Not So Scary Halloween Party date, and that’s scheduled for September 2.
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- Supplement. In cell biology, a tetrad pertains to the structure formed by the synapsis of homologous chromosomes during the prophase I of meiosis. Word origin: Greek tetras, tetrad-. Synonym: bivalent. Related term: 1  Fallots tetrad.
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the-; them-, themat-, thes-, thet- + 6. Etymology: from Old French tesme; from Latin thema, a subject, a thesis; from Greek thema, a proposition, a subject, a deposit. Literally, something set down, from the root of tithenai, to put down, to place.
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Tetrodotoxin And The Threat Of Bioterrorism Biology Essay Tetrodotoxin (TTX, CAS Number [4368-28-9]) is a potent marine neurotoxin, named after the order of fish from which it is most commonly associated, the Tetraodontiformes (tetras-four and odontos-tooth), or the tetraodon pufferfish.
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- TETRA stands for TErrestrial Trunked RAdio. It is the new national police radio system, operated. by O2 Service. Planned since early 1990, the contract was given in March 2000 to BT and Motorola. Since that time BT has split its business and the Airwave contract went to the section of the.
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Tetrachromacy Tetrachromacy is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cells in the eye. Organisms with tetrachromacy are called tetrachromats.
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tetrad 1 a group or set of four. 2  Bot. a group of four cells formed by division within a spore mother cell during meiosis. 3  Chem. an atom, radical, or element that is tetravalent.  Genetics a group of four similar chromatids formed by the longitudinal division of a pair of homologous chromosomes during meiotic prophase.
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tetrarch late Old English tetrarche ruler of one of four divisions of a kingdom or province, from Late Latin tetrarcha, from Greek tetrarkhes leader of four companies, tetrarch, from tetra-four (see tetra-) + arkhein to rule (see archon).
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Tetrad (meiosis) Tetrad (genetics) The tetrad is the four spores of a yeast, other Ascomycota or Chlamydomonas produced after meiosis. After parent haploids mate, they produce diploids. Under appropriate environmental conditions, diploids sporulate and undergo meiosis. The meiotic products, spores, remain packaged in the parental cell body to produce the tetrad.
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Neon Tetra The Neon Tetra is a peaceful fish that is often kept in community aquariums with other non-aggressive fish species of roughly the same size. Neon tetras look very beautiful when combined with other tetra species, but they can be combined with fishes from a broad range of other families as well.