# diadema
## Catalan
### Etymology

Borrowed from Latin diadēma, from Ancient Greek διάδημα (diádēma), from διαδέω (diadéō, “to bind around”).

### Pronunciation

* IPA: (Central) [di.əˈðɛ.mə]
* IPA: (Balearic) [di.əˈðe.mə]
* IPA: (Valencia) [di.aˈðe.ma]

### Noun

diadema f (plural diademes)
* diadem

#### Derived terms

* diademat

### Further reading

* “diadema” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.
* “diadema”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2025
* “diadema” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
* “diadema” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

## Galician
### Etymology

From Latin diadēma, from Ancient Greek διάδημα (diádēma), from διαδέω (diadéō, “I bind around”).

### Noun

diadema m (plural diademas)
* diadem

### Further reading

* “diadema”, in Dicionario da Real Academia Galega (in Galician), A Coruña: Royal Galician Academy, 2012–2025

## Italian
### Etymology

From Latin diadēma, from Ancient Greek διάδημα (diádēma), from διαδέω (diadéō, “I bind around”).

### Pronunciation

* IPA: /di.aˈdɛ.ma/, /djaˈdɛ.ma/
* Rhymes: -ɛma
* Hyphenation: di‧a‧dè‧ma, dia‧dè‧ma

### Noun

diadema m (plural diademi)
* diadem
* tiara

### Further reading

* diadema in Treccani.it – Vocabolario Treccani on line, Istituto dell'Enciclopedia Italiana
* diadema in Luciano Canepari, Dizionario di Pronuncia Italiana (DiPI)

## Latin
### Etymology

From Koine Greek διάδημα (diádēma, “a decorative wreath-shaped headdress”), from Ancient Greek διαδέω (diadéō, “to encircle, bind, wrap around”) + -μα (-ma, result noun suffix).

### Pronunciation

* (Classical Latin) IPA: /di.aˈdeː.ma/, [d̪iäˈd̪eːmä]
* (modern Italianate Ecclesiastical) IPA: /di.aˈde.ma/, [d̪iäˈd̪ɛːmä]

### Noun

diadēma n (genitive diadēmatis); third declension
* diadem, crown, tiara; a royal headdress

#### Declension

Third-declension noun (neuter, imparisyllabic non-i-stem).

#### Descendants

* Catalan: diadema
* English: diadem
* French: diadème
* Galician: diadema
* Italian: diadema
* Portuguese: diadema
* Romanian: diademă
* Sicilian: diadema
* Spanish: diadema

### References

* “diadema”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
* “diadema”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
* diadema in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
* diadema in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
* “diadema”, in Harry Thurston Peck, editor (1898), Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
* “diadema”, in William Smith et al., editor (1890), A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin

## Portuguese
### Etymology

Learned borrowing from Latin diadēma, from Ancient Greek διάδημα (diádēma), from διαδέω (diadéō, “to bind around”).

### Pronunciation

* (Brazil) IPA: /d͡ʒi.aˈdẽ.mɐ/ [d͡ʒɪ.aˈdẽ.mɐ], (faster pronunciation) /d͡ʒjaˈdẽ.mɐ/
* (Brazil) IPA: /d͡ʒi.aˈdẽ.mɐ/ [d͡ʒɪ.aˈdẽ.mɐ], (faster pronunciation) /d͡ʒjaˈdẽ.mɐ/
** (Southern Brazil) IPA: /d͡ʒi.aˈde.ma/ [d͡ʒɪ.aˈde.ma], (faster pronunciation) /d͡ʒjaˈde.ma/
* (Portugal) IPA: /di.ɐˈde.mɐ/ [di.ɐˈðe.mɐ], (faster pronunciation) /djɐˈde.mɐ/ [djɐˈðe.mɐ]
* Rhymes: -emɐ

### Noun

diadema m (plural diademas)
* diadem

### Further reading

* “diadema”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2025

## Romanian
### Pronunciation

* IPA: [di.aˈdema]

### Noun

diadema f
* definite nominative/accusative singular of diademă

## Spanish
### Etymology

From Latin diadēma, from Ancient Greek διάδημα (diádēma), from διαδέω (diadéō, “to bind around”).

### Pronunciation

* IPA: /djaˈdema/ [d̪jaˈð̞e.ma]
* Rhymes: -ema
* Syllabification: dia‧de‧ma

### Noun

diadema f (plural diademas)
* diadem, crown
    Synonym: corona
* tiara (ornamental coronet)
    Synonym: tiara
* halo, aureole, nimbus
    Synonym: aureola
* headband
    Synonym: cintillo

#### Derived terms

* diademado

### Further reading

* “diadema”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10