# versor
## English
### Etymology

From Latin vertere, versus (“to turn”). See version.

### Noun

versor (plural versors)
* (quaternion algebra) A quaternion of norm one.
* (geometric algebra) A multivector representing a proper or improper rotation.

### Anagrams

* Rovers, rovers

## Latin
### Etymology

From versō.

### Pronunciation

* (Classical Latin) IPA: /ˈu̯er.sor/, [ˈu̯ɛrs̠ɔr]
* (modern Italianate Ecclesiastical) IPA: /ˈver.sor/, [ˈvɛrsor]

### Verb

versor (present infinitive versārī or versārier, perfect active versātus sum); first conjugation, deponent
* (intransitive) to live, stay, be (somewhere)
    Synonyms: habitō, obsideō, resideō, possideō, cōnsīdō, stabulō, iaceō, incolō, subsīdō
* (intransitive) to be (in a certain condition or set of circumstances)
* (intransitive) to be occupied with, engaged in (in re), pay attention to, practice
    Synonyms: operor, exerceō, labōrō
** c. 52 BCE, Julius Caesar, Commentarii de Bello Gallico VII.27:Suosque languidius in opere versari iussitAnd ordered his [men] to engage in the works more remissly
* (intransitive) to turn back and forth, rotate

#### Conjugation

$^1$The present passive infinitive in -ier is a rare poetic form which is attested.

#### Derived terms

* conversor

### References

* “versor”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
* versor 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)
* versor in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
* Carl Meißner, Henry William Auden (1894) Latin Phrase-Book‎, London: Macmillan and Co. something presents itself to my vision: ante oculos aliquid versatur to be in a dilemma; in difficulties: in angustiis, difficultatibus, esse or versari to be in danger: in periculo esse or versari the position is very critical: res in summo discrimine versatur to be in peril of one's life: in vitae discrimine versari a man's life is at stake, is in very great danger: salus, caput, vita alicuius agitur, periclitatur, in discrimine est or versatur to live in poverty, destitution: in egestate esse, versari to be mistaken: in errore versari to be in gross error, seriously misled: in magno errore versari to be engaged in literary pursuits: in studio litterarum versari to be engaged in any branch of study: in aliquo litterarum genere versari to be an ardent student of..: summo studio in litteris versari to be well (slightly) acquainted with Greek literature: multum (mediocriter) in graecis litteris versari abstruse studies: studia, quae in reconditis artibus versantur (De Or. 1. 2. 8) theoretical, speculative philosophy: philosophia, quae in rerum contemplatione versatur, or quae artis praeceptis continetur practical philosophy: philosophia, quae in actione versatur to be at variance with: in controversia (contentione) esse, versari to be in fear: in timore esse, versari to be in severe pecuniary straits: in summa difficultate nummaria versari (Verr. 2. 28. 69) to have no debts: in suis nummis versari (Verr. 4. 6. 11) to take part in politics: in re publica or in rebus publicis versari to use the same simile, illustration: ut in eodem simili verser

## Portuguese
### Etymology

From Latin versus +‎ -or.

### Pronunciation

* (Brazil) IPA: /veʁˈsoʁ/ [vehˈsoh]
* (Brazil) IPA: /veʁˈsoʁ/ [vehˈsoh]
** (São Paulo) IPA: /veɾˈsoɾ/
** (Rio de Janeiro) IPA: /veʁˈsoʁ/ [veχˈsoχ]
** (Southern Brazil) IPA: /veɻˈsoɻ/
* (Portugal) IPA: /vɨɾˈsoɾ/
* (Portugal) IPA: /vɨɾˈsoɾ/
** (Northern Portugal) IPA: /bɨɾˈsoɾ/
** (Southern Portugal) IPA: /vɨɾˈso.ɾi/
* Hyphenation: ver‧sor

### Noun

versor m (plural versores)
* (linear algebra) unit vector

### References

* ↑ “versor”, in Dicionário infopédia da Língua Portuguesa (in Portuguese), Porto: Porto Editora, 2003–2024
* ↑ “versor”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2024

## Venetan
### Alternative forms

* versorio

### Noun

versor m (plural versori)
* plough