Speakur

Word Pronunciation & Dictionary

cysteine

/ˈsɪs.təˌin/

Word Rarity Rare

Frequency: 2.66 in modern English

Syllables
cys-te-ine
IPA
/ˈsɪs.təˌin/
13
Scrabble Score
8
Letters
3
Syllables
7
Unique Chars

Meaning

noun

A sulphur-containing nonessential amino acid C₃H₇NO₂S found in most animal proteins; it readily oxidizes to cystine.

Countable; Uncountable

Etymology

An alteration of cystine, see -eine.

Regional Pronunciation

  • American English: /ˈsɪs.təˌin/
  • British English: /ˈsɪs.təˌiːn/

Usage

Inflected Forms

cysteines (plural)

Derived Forms

acetylcysteine cysteic cysteinal cysteinate cysteineless cysteinyl dacisteine dicysteine glutamylcysteine guaisteine intercysteine isoprenylcysteine

Frequently Paired Words

homocysteine

Synonyms

E910 when used as a food additive E920 when used as an improving agent Cys when viewed as a monomer in proteins

Rhymes With

christine pristine sistine philistine cystine vincristine

Questions

How do you pronounce cysteine?
The recorded pronunciation is /ˈsɪs.təˌin/.
What does cysteine mean?
A sulphur-containing nonessential amino acid C₃H₇NO₂S found in most animal proteins; it readily oxidizes to cystine.
Where does cysteine come from?
An alteration of cystine, see -eine.

How to pronounce cysteine

  1. Open the pronunciation page — Open the Speakur entry for “cysteine”.
  2. Read the phonetic spelling — Read the IPA spelling (/ˈsɪs.təˌin/) so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “cysteine”.
  4. Repeat and practice — Say “cysteine” aloud, matching stress and vowels until it feels natural.