Definition

Noun: 1. Iodine: A nonmetallic, dark-gray to purple-black, lustrous, solid element belonging to the halogen group on the periodic table. It is essential for human thyroid function and is used in various chemical applications, medicine, photography, and dyes. It occurs naturally in combined forms, such as in seawater, certain rocks, and some seaweeds. * Symbol: I * Note: "Atomic number 53" is the scientific identifier for the element iodine, referring specifically to the number of protons in its nucleus.

Usage Examples

• Noun:
  • The doctor recommended a supplement containing atomic number 53 to correct the thyroid deficiency.
  • In chemistry class, we learned that atomic number 53 corresponds to the element iodine on the periodic table.
  • Tincture of iodine, a common antiseptic, is a solution of atomic number 53 in alcohol.

Advanced Usage

• Scientific and Technical Contexts: The term "atomic number 53" is primarily used in formal scientific, educational, or technical writing to specify the element precisely by its fundamental property (proton count), rather than its common name.
  • The spectrum confirmed the presence of the element with atomic number 53 in the compound.

Variants and Related Words

• Iodine (I) (n): The common name for the element with atomic number 53.
• Iodide (n): A compound containing iodine in its ionic form (I⁻), such as potassium iodide.
• Iodize (v): To treat or combine with iodine, as in iodized salt.
• Halogen (n): The group of elements on the periodic table (Group 17) to which iodine belongs, including fluorine, chlorine, and bromine.

Synonyms

• Iodine (n): The direct and most common synonym.
• I (n): The chemical symbol.

Related Phrases and Compounds

• Radioactive iodine (I-131) (n): A radioactive isotope of iodine used in medical diagnostics and treatment.
• Lugol's iodine (n): A specific solution of iodine and potassium iodide in water, used as a disinfectant and starch indicator.
• Iodine deficiency (n): A lack of sufficient iodine in the diet, which can lead to thyroid disorders.

Noun

1. a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)