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Glite Dictionary
🏭 A shaping machine 🤨 A forehead muscle
corrugator

corrugator

1 9.9
A small forehead muscle that pulls the eyebrows together to make vertical wrinkles
  • noun
  • /ˈkɔrəˌɡeɪtər/
  • Specialized
: músculo corrugador
  • In moments of concentration, the corrugator muscles between his eyebrows tightened, creating noticeable wrinkles.
  • corrugator muscle

Examples

  • The expression on his face changed as the corrugator muscles tensed, indicating his frustration.

  • The muscles of his upper face expressed both surprise, signaled by the raising of both eyelids, as well as anger, with the contraction of his corrugator (brow) muscles pulling his eyebrows together.

    Academic text (2015)

  • Figure 1: The edges are freshened, and horizontal and vertical triangles are designed to lie within the creases of the frontalis and corrugator muscles, respectively.

    Academic text (2012)

  • Two inferior vertical limbs, with widths equal to the radius of the lesion, are then marked to lie within creases formed by the corrugator muscles (Figure 1).

    Academic text (2012)

  • When she felt angry, the contraction of her corrugator muscles drew her eyebrows together.

Surface Forms

corrugator singular
corrugators plural

Morphology

corrugator = corrugate (semi-transparent) = corrugate + or

Formally an agentive noun from 'corrugate', but used as a specific anatomical name for a muscle, making the sense technical and less immediately obvious to general learners.

Etymology

Corrugator comes from the Latin corrugare, which means 'to wrinkle' (from com- 'together' and ruga 'wrinkle'), and the corrugator muscle pulls the eyebrows together to make a vertical 'wrinkle' between them, which is why it has that name.