noun · feminine
sēmirēcta
sēmirēcta f
Classical[seː.mɪˈreːk.ta]Ecclesiastical[se.miˈrɛk.ta]
Meaning
- New Latinray, half-line; a part of a line starting at a point and extending infinitely in one direction.
Sēmirēcta ab $A$ in infinitum prōdūcitur.
The ray is produced from A to infinity.
Declension
| form | singular | plural |
|---|---|---|
| nominative | sēmirēcta | sēmirēctae |
| genitive | sēmirēctae | sēmirēctārum |
| dative | sēmirēctae | sēmirēctīs |
| accusative | sēmirēctam | sēmirēctās |
| ablative | sēmirēctā | sēmirēctīs |
| vocative | sēmirēcta | sēmirēctae |
Origins
From sēmi- (“half”) + rēcta (“straight line”). The term is attested in early modern scientific manuscripts (e.g. in the Galileo codices, see References) and is used in modern Latin to distinguish the geometric concept from radius.