cuticle

noun

cu·​ti·​cle ˈkyü-ti-kəl 

1

: an outer covering layer: such as

a

: an external envelope (as of an insect) secreted usually by epidermal cells

b

: the outermost layer of animal integument composed of epidermis

c

: a thin continuous fatty or waxy film on the external surface of many higher plants that consists chiefly of cutin

d

: the outermost membranous layer of a hair consisting of overlapping scales of epithelial cells

2

: dead or horny epidermis (such as that surrounding the base and sides of a fingernail)

cuticular

kyu̇-ˈti-kyə-lər 

adjective

Examples of cuticle in a Sentence

Recent Examples on the Web

Moisture-sealing babassu oil smooths the hair cuticle, nourishing murumuru butter replenishes dry strands, and hyaluronic acid provides lightweight hydration without weighing hair down. — Christa Joanna Lee, Allure, 19 June 2026

The Iron Sleek Shampoo (along with the rest of the line) features a shine-boosting, frizz-fighting formula that’s sulfate-free, color-safe, and packed with alpha-acids to help smooth, soften, and seal the hair cuticle against humidity. — Kaitlin Clapinski, InStyle, 18 June 2026

Keeping a smooth and hydrated cuticle — the outer layer of the hair — can block the moisture attachment. — Kaleigh Werner, Footwear News, 9 June 2026

Hair loss is self-explanatory, while dryness results from damage to the outer layer of the cuticle, leading to moisture loss and hair that feels coarse and appears dull. — Conçetta Ciarlo, Vogue, 8 June 2026

Word History

Etymology

Latin cuticula, diminutive of cutis skin — more at hide

First Known Use

1615, in the meaning defined at sense 1

Rhymes for cuticle

• hermeneutical
• pharmaceutical
• radiopharmaceutical

Kids Definition

cuticle

noun

cu·​ti·​cle ˈkyüt-i-kəl 

1

: an outer layer (as of skin or a leaf) often produced by the cells beneath

2

: a dead or horny layer of skin especially around a fingernail

Medical Definition

cuticle

noun

cu·​ti·​cle ˈkyüt-i-kəl 

1

: an outer covering layer: as

a

: the outermost layer of integument composed of epidermis

b

: the outermost membranous layer of a hair consisting of cornified epithelial cells

2

: dead or horny epidermis (as that surrounding the base and sides of a fingernail or toenail)

cuticular

kyu̇-ˈtik-yə-lər 

adjective