t

/ti:/

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The letter "t" can refer to several concepts in English. Here’s a breakdown to help you understand it better:

Basic Definition

1. Letter "T": In the English alphabet, "T" is the 20th letter. It is a consonant and is pronounced as /tiː/.
2. Thyroid Hormone (T): In a scientific context, "T" can refer to thyroid hormones, particularly "T4" (thyroxine) and "T3" (triiodothyronine). These hormones are produced by the thyroid gland and help regulate metabolism in the body.

Usage Instructions

• As a Letter: Use "T" when spelling words, like "tree" or "table."
• In Science: Use "T" when discussing thyroid hormones, for example, "The doctor tested my T levels."

Example Sentences

• As a Letter: "The word 'top' starts with the letter T."
• In Science: "The thyroid gland produces T4 and T3 hormones to control metabolism."

Advanced Usage

• In genetics, "T" refers to one of the four nucleotides in DNA. It stands for thymine, which pairs with adenine (A) in the DNA structure.
• In measurements, "T" can be an abbreviation for metric tons, where 1 T equals 1,000 kilograms.

Word Variants

• Thyroxine (T4): A hormone produced by the thyroid gland, essential for metabolism.
• Triiodothyronine (T3): Another thyroid hormone that is more potent than thyroxine.

Different Meanings

• T (in Chemistry): Can refer to a specific temperature in physical chemistry or represent time in formulas.
• T (in Music): May represent a note in a musical scale or a type of chord.

Synonyms

• For "thyroid hormone," synonyms might include "endocrine hormone" or "metabolic hormone."
• As a letter, there aren’t direct synonyms, but you might refer to it as a consonant.

Idioms and Phrasal Verbs

• "Crossing the T's and dotting the I's": This idiom means to pay attention to detail or ensure everything is correct.
• "T off": A phrasal verb used in golf, meaning to hit the ball from the tee.

Summary

The letter "T" is important for spelling and communication in English. It also plays significant roles in science, specifically in biology and genetics.

Academic

Noun

1. hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells
   • thyroxine is 65% iodine
2. thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer
3. the 20th letter of the Roman alphabet
4. a unit of weight equivalent to 1000 kilograms
5. one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
6. a base found in DNA (but not in RNA) and derived from pyrimidine; pairs with adenine

Synonyms

• thyroxine
• thyroxin
• tetraiodothyronine
• T
• triiodothyronine
• liothyronine
• metric ton
• MT
• tonne
• deoxythymidine monophosphate
• thymine