-etum

• -tum
• -ctum

Rebracketing of -tum in nouns ending in -ē-tum; perhaps from veprētum (“a thicket of bramble”), from vepr-ē-s, or the early-attested olētum. The ease of attaching the vowel-initial suffix to any noun stem likely helped the suffix to supplant -tum.

Compare other neuter suffixes that can form nouns representing locations, such as -ārium n, -īle n, -tōrium n (vs. masculine -ārius,-īlis, -tōrius).

• (Classical Latin) IPA^(key): [ˈeː.tũː]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈɛː.tum]

-ētum n (genitive -ētī); second declension

1. (horticulture) used to form nouns from certain plant or tree names to denote a place where the species grows or is made to grow; grove, thicket, woods; orchard, plantation, -yard, garden

   ‎olea (“an olive”) + ‎-ētum → ‎olētum (“a olive-yard”)

   ‎rosa (“a rose”) + ‎-ētum → ‎rosētum (“a rose garden”)

2. (by extension) extended to other places

   ‎saxum (“a rock”) + ‎-ētum → ‎saxētum (“a rocky-place”)

   ‎bōs (“a cow or bull”) + ‎-ētum → ‎būcētum (“a cow-pasture”)

Second-declension noun (neuter).

• Catalan: -et, -eda
• French: -aie
• Galician: -edo, -ido (place-names)
• Italian: -eto, -eta
• Portuguese: -edo
• Romanian: -et
• Sicilian: -itu, -ita (place-names)
• Spanish: -edo, -eda