growth factor

noun

: a substance (such as a vitamin B₁₂ or an interleukin) that promotes growth and especially cellular growth

Examples of growth factor in a Sentence

Recent Examples on the Web

Think peptides that help preserve the skin’s collagen reserves, keeping it soft and supple; polyglutamic acid, which hydrates far more deeply than hyaluronic acid; and growth factors to further support collagen and elastin, the two key proteins that give skin structure and help prevent fine lines. —Jacqueline Kilikita, Refinery29, 22 Jan. 2026

Where things get tricky is the ingredient sourcing—for example, human growth factors are found in some of these rejuvenating serums. —Emily Orofino, Vogue, 17 Jan. 2026

This high-tech serum combines growth factors, antioxidants, and hydrating ingredients to smooth texture, even tone, and support the skin barrier. —Colleen Sullivan, InStyle, 10 Jan. 2026

That debut will include 13 of the brand’s top sellers, including an eye corrector, eye masks, a growth factor serum and a peptide night cream, ranging in price from $28 to $69. —Kathryn Hopkins, Footwear News, 17 Dec. 2025

Word History

First Known Use

1926, in the meaning defined above

Rhymes for growth factor

• attractor
• cofactor
• compactor
• contactor
• contractor
• distractor
• extractor
• impactor
• protractor
• reactor
• redactor
• refractor

Medical Definition

growth factor

noun

: a substance (as a vitamin B₁₂ or an interleukin) that promotes growth and especially cellular growth