zeatinnoun
Factsheet
What does the noun zeatin mean?
There is one meaning in OED's entry for the noun zeatin. See ‘Meaning & use’ for definition, usage, and quotation evidence.
How common is the noun zeatin?
| 1960 | 0.048 |
| 1970 | 0.044 |
| 1980 | 0.041 |
| 1990 | 0.041 |
| 2000 | 0.046 |
| 2010 | 0.042 |
How is the noun zeatin pronounced?
British English
U.S. English
Where does the noun zeatin come from?
Earliest known use
1960s
The earliest known use of the noun zeatin is in the 1960s.
OED's earliest evidence for zeatin is from 1963, in the writing of D. S. Letham.
zeatin is formed within English, by derivation.
Etymons: zea n., English ‑t‑, ‑in suffix1.
Nearby entries
- zealousness, n.c1555–
- zealousy, n.1542–
- zeal-pretending, adj.1652–69
- zeal-quenching, adj.1688–1877
- zeal-scoffing, adj.1605
- zeal-transported, adj.a1644–59
- zeal-worthy, adj.1797
- zea maize, n.1811–
- zearalanol, n.1966–
- zearalenone, n.1966–
- zeatin, n.1963–
- zeaxanthin, n.1929–
- Zebedist, n.1574
- zebra, n.1597–
- zebra caterpillar, n.1841–
- zebra crossing, n.1934–
- zebra danio, n.1917–
- zebraed, adj.1806–
- zebra finch, n.1868–
- zebrafish, n.1771–
- zebraic, adj.1858–
Etymology
Meaning & use
- 1963–A plant hormone (a cytokinin) first isolated from maize kernels and found in a variety of other plants; (also) an isomer or derivative of this.Chemical name: (E)-2-methyl-4-(1H-purin-6-ylamino)-2-buten-1-ol; C10H13N5O.
- 1963
For this factor the name zeatin is proposed since it was first isolated in crystalline form from Zea mays.
D. S. Letham in Life Science vol. 2 572 - 1973
Coconut milk..contains a high concentration of zeatin.
D. W. Krogmann, Biochem. Green Plants xi. 196 - 1980
All the cytokinins, at 10−6 M and above, inhibited both the initiation and the emergence of lateral roots, zeatin being the most powerful inhibitor.
Physiologia Plantarum vol. 49 304/1 - 2014
The plant..is also rich in zeatin, a plant hormone which has an anti-ageing effect on skin cells.
MailOnline (Nexis) 19 April
- hormone1911–Any of numerous organic compounds produced by plants which regulate growth and other physiological activities; (also) any synthetic compound…
- wound hormone1921–A substance that is produced in a plant in response to a wound and stimulates healing; cf. traumatic acid n. at traumatic, adj. & n.compounds.
- plant hormone1932–= hormone, n. 2.
- phytohormone1933–A hormone produced by a plant; = hormone, n. 2.
- auxin1934–An organic substance which promotes and directs the growth of plant cells; a growth hormone.
- heteroauxin1935–A growth-promoting hormone, (C8H6N)CH2·COOH, that occurs in some plants and micro-organisms; also called β-indolyl acetic acid, 3-indoleacetic acid.
- florigen1936–An unidentified hormone supposed to induce flowering in plants.
- traumatic acid1939–Botany. traumatic acid, a plant hormone that is found in damaged tissue in some plants and promotes its repair; dodec-2-ene-1,12-dioic acid…
- abscisin1961–Either of two substances that promote leaf abscission, (a) (more fully abscisin I) one isolated from cotton bolls (now historical); (b) (more fully…
- zeatin1963–A plant hormone (a cytokinin) first isolated from maize kernels and found in a variety of other plants; (also) an isomer or derivative of this.
- cytokinin1965–Any of a large group of natural and synthetic purine derivatives that function as growth regulators in plants, acting to promote cell division…
- antheridiol1967–A steroid hormone produced by female hyphae of the filamentous fungus Achlya bisexualis, which stimulates the male hyphae to produce antheridia.
- abscisic acid1968–A plant hormone which promotes seed and bud dormancy and inhibits germination.
- oogoniol1975–A steroid hormone produced by male hyphae of several filamentous fungi of the genus Achlya, which stimulates female hyphae to produce oogonia. Cf. a…
Pronunciation
British English
U.S. English
Consonants
- ppea
- ttea
- kkey
- bbuy
- ddye
- ɡguy
- tʃchore
- dʒjay
- ffore
- θthaw
- ssore
- ʃshore
- vvee
- ðthee
- zzee
- ʒbeige
- xloch
- hhay
- llay
- ɬrhingyll
- rray
- wway
- jyore
- mmay
- nnay
- ŋsing
Some consonants can take the function of the vowel in unstressed syllables. Where necessary, a syllabic marker diacritic is used, hence
Vowels
- iːfleece
- ihappy
- ɪkit
- ɛdress
- atrap, bath
- ɑːstart, palm, bath
- ɒlot
- ɔːthought, force
- ʌstrut
- ʊfoot
- uːgoose
- əletter
- əːnurse
- ɪənear
- ɛːsquare
- ʊəcure
- eɪface
- ʌɪpride
- aʊmouth
- əʊgoat
- ɔɪvoice
- ãgratin
- ɒ̃salon
- ᵻ(/ɪ/-/ə/)
- ᵿ(/ʊ/-/ə/)
Other symbols
- The symbol ˈ at the beginning of a syllable indicates that that syllable is pronounced with primary stress.
- The symbol ˌ at the beginning of a syllable indicates that that syllable is pronounced with secondary stress.
- Round brackets ( ) in a transcription indicate that the symbol within the brackets is optional.
View the pronunciation model here.
Consonants
- ppea
- ttea
- kkey
- bbuy
- ddye*
- ɡguy
- tʃchore
- dʒjay
- ffore
- θthaw
- ssore
- ʃshore
- vvee
- ðthee
- zzee
- ʒbeige
- xloch
- hhay
- llay
- rray
- wway
- jyore
- mmay
- nnay
- ŋsing
* /d/ also represents a 'tapped' /t/ as in
Some consonants can take the function of the vowel in unstressed syllables. Where necessary, a syllabic marker diacritic is used, hence
Vowels
- ifleece, happy
- ɪkit
- ɛdress
- ætrap, bath
- ɑlot, palm, cloth, thought
- ɑrstart
- ɔcloth, thought
- ɔrnorth, force
- ʊfoot
- ugoose
- əstrut, comma
- ərnurse, letter
- ɪ(ə)rnear
- ɛ(ə)rsquare
- ʊ(ə)rcure
- eɪface
- aɪpride
- aʊmouth
- oʊgoat
- ɔɪvoice
- ɑ̃gratin
- æ̃salon
- ᵻ(/ɪ/-/ə/)
- ᵿ(/ʊ/-/ə/)
Other symbols
- The symbol ˈ at the beginning of a syllable indicates that that syllable is pronounced with primary stress.
- The symbol ˌ at the beginning of a syllable indicates that that syllable is pronounced with secondary stress.
- Round brackets ( ) in a transcription indicate that the symbol within the brackets is optional.
View the pronunciation model here.
Simple text respell breaks words into syllables, separated by a hyphen. The syllable which carries the primary stress is written in capital letters. This key covers both British and U.S. English Simple Text Respell.
Consonants
b, d, f, h, k, l, m, n, p, r, s, t, v, w and z have their standard English values
- gguy
- jjay
- yyore
- chchore
- khloch
- shshore
- ththaw
- dhthee
- zhbeige
Vowels
- atrap
- ahpalm
- airsquare
- arstart
- arrcarry (British only)
- awthought
- ayface
- a(ng)gratin
- edress
- eefleece
- eerdeer
- errmerry
- ikit
- ighpride
- irrmirror
- olot (British only)
- ohgoat
- oogoose
- oorcure
- orforce
- orrsorry (British only)
- owmouth
- oyvoice
- o(ng)salon
- ustrut
- uhletter
- urnurse
- urrhurry
- uufoot
Frequency
zeatin typically occurs about 0.04 times per million words in modern written English.
zeatin is in frequency band 3, which contains words occurring between 0.01 and 0.1 times per million words in modern written English. More about OED's frequency bands
Frequency of zeatin, n., 1960–2010
* Occurrences per million words in written English
Historical frequency series are derived from Google Books Ngrams (version 2), a data set based on the Google Books corpus of several million books printed in English between 1500 and 2010.
The overall frequency for a given word is calculated by summing frequencies for the main form of the word, any plural or inflected forms, and any major spelling variations.
For sets of homographs (distinct entries that share the same word-form, e.g. mole, n.¹, mole, n.², mole, n.³, etc.), we have estimated the frequency of each homograph entry as a fraction of the total Ngrams frequency for the word-form. This may result in inaccuracies.
Smoothing has been applied to series for lower-frequency words, using a moving-average algorithm. This reduces short-term fluctuations, which may be produced by variability in the content of the Google Books corpus.
| Decade | Frequency per million words |
|---|---|
| 1960 | 0.048 |
| 1970 | 0.044 |
| 1980 | 0.041 |
| 1990 | 0.041 |
| 2000 | 0.046 |
| 2010 | 0.042 |