Definition

1. Noun:
   • The mineral form of lead monoxide: A naturally occurring mineral composed primarily of lead(II) oxide (PbO).
   • A yellow pigment: When processed into a yellow powder, it is used as a pigment in various applications.

Examples of Usage

• Noun:
  • The geologist identified the yellow crystalline substance as massicotite.
  • Artists in the Renaissance sometimes used massicotite to achieve a bright yellow hue.

Advanced Usage

• Scientific Context: In mineralogy, "massicotite" specifically refers to the orthorhombic polymorph of lead(II) oxide, distinguishing it from the tetragonal form known as litharge.
  • The sample's crystal structure confirmed it was massicotite, not litharge.

Variants and Related Words

• Massicot (n): A term often used interchangeably with "massicotite," particularly to describe the yellow pigment form.
  • The recipe called for massicot to create the vibrant yellow glaze.
• Litharge (n): The tetragonal (red) form of lead monoxide, a related but distinct mineral.
• Lead monoxide (n): The chemical compound (PbO) that constitutes both massicotite and litharge.

Synonyms

• Yellow lead ore: A descriptive synonym highlighting its color and composition.
• Plumbous oxide: An older chemical name for lead(II) oxide.

Notes on Usage

• The term "massicotite" is primarily used in scientific, mineralogical, and historical art contexts. In modern industrial contexts, the more general term "lead monoxide" or "PbO" is typically used.
• Due to the toxicity of lead, the use of massicotite as a pigment has been largely discontinued.

Noun

1. the mineral form of lead monoxide; in the form of yellow powder it is used as a pigment