acetate

acetate — noun

1. Any compound formed when acetic acid combines with another substance such as a m

1.nounC2
Definition

Any compound formed when acetic acid combines with another substance such as a metal or alcohol; many of these compounds appear in dyes, medicines, and food additives.

Example

Sodium acetate is added to many snack foods to give them a salt-and-vinegar flavour.

compound name pattern: [metal] + acetate

Dr. Patel mixed copper acetate into the solution and watched it turn deep blue.

named subject with technical object

Common collocations
  • sodium acetate
  • copper acetate
  • lead acetate
  • potassium acetate
  • zinc acetate
Synonyms
  • ethanoate

    the formal IUPAC chemistry term for the same compound family

Grammar Patterns

acetate of [metal]

[noun] acetate

Usage Note

Often appears as the second word in a fixed pair such as 'sodium acetate' or 'lead acetate'. Distinguish from sense 2 by context: sense 1 always names a chemical, never a fabric or material.

Common Mistakes

I bought a sodium acetate shirt.
I bought an acetate shirt.
the chemical compound (sense 1) is not a clothing material; the fabric meaning (sense 2) is just 'acetate' alone.

2. A soft, shiny man-made fabric, made from threads of cellulose acetate, that feel

2.nounC1
Definition

A soft, shiny man-made fabric, made from threads of cellulose acetate, that feels similar to silk and is often used to line jackets, dresses, and skirts.

Example

The lining of Bram's wedding dress was made of pale pink acetate.

typical context: dress / jacket lining

Acetate feels smooth and cool against the skin, much like real silk.

subject = the fabric itself, uncountable

Common collocations
  • acetate lining
  • acetate dress
  • acetate fabric
  • made of acetate
  • silk and acetate
Synonyms
  • rayon

    another cellulose-based artificial fabric, but spun differently

  • viscose

    similar silky look, but made through a different chemical process

Grammar Patterns

made of acetate

[noun] in acetate

Usage Note

Almost always uncountable in this sense. Frequently paired with 'lining', 'dress', 'shirt', or 'fabric'. Distinguish from sense 1 by the surrounding words: if the text mentions clothing, sewing, or texture, this is the fabric sense.

Common Mistakes

She wore two acetates to the party.
She wore two acetate dresses to the party.
the fabric sense is uncountable, so you need a head noun like 'dress' or 'blouse'.

Word family

  • acetic
    adjectiveC2
  • acetic acid
    nounC2
  • acetylate
    verbC2

Synonym discussion

Sense: noun/2

All four are man-made fabrics, but they differ in how they are made and how they feel. Acetate is made from cellulose treated with acetic acid; it has a smooth, silk-like shine and is often used as a lining inside jackets and dresses. Rayon and viscose come from cellulose too, but the threads are formed through a different chemical bath, giving a softer, more cotton-like drape. Polyester is fully synthetic, made from petroleum, and is stronger and cheaper but less breathable. So a shop selling 'silk-look' dress linings will usually pick acetate; a soft summer blouse is more likely rayon or viscose; and a hard-wearing school shirt is often polyester.

acetate ↗rayonviscosepolyester ↗

Common collocations

Nouns

  • acetate lining
  • acetate fabric
  • acetate fibre
  • sodium acetate
  • cellulose acetate

Phrases

  • a roll of acetate
  • blended with acetate

Prepositions

  • made of acetate
  • in acetate
  • lined with acetate

Etymology

LatinFrenchEnglish

Borrowed into English in the late 1700s from the Latin word 'acetum', meaning vinegar, with the chemistry suffix '-ate' added to mark it as a salt formed from an acid. The fabric meaning came much later, in the early 1900s, when chemists learned to spin threads from cellulose treated with acetic acid.