petra

1.

pē̆tra, ae, f., = petra, a rock, a crag, stone (pure Lat. saxum; cf.: rupes, scopulus): petrarum genera sunt duo, quorum alterum naturale saxum prominens in mare;

alterum manufactum ut docet Aelius Gallus: Petra est, qui locus dextrā ac sinistrā fornicem expletur usque ad libramentum summi fornicis,

Fest. p. 206 Müll. (of the latter signif. there is no other example known): petris ingentibus tecta, Enn. ap. Fest. 1. 1. (Ann. v. 366); Sen. Herc. Oet. 804:

aquam de petrā produxit,

Vulg. Isa. 48, 21 et saep.:

gaviae in petris nidificant,

Plin. 10, 32, 48, § 91:

alga, quae juxta terram in petris nascitur,

id. 32, 6, 22, § 66; 34, 12, 29, § 117; Curt. 7, 11, 1.

2.

Pē̆tra, ae, f., = Petra, the name of several cities.

I.

A city in Arabia Petrœa, now the ruins of Wadi Musa, Plin. 6, 28, 32, § 144; Vulg. Jer. 48, 28.—Hence,

B.

Pē̆traeus, a, um, adj., Petrean:

balanus,

Plin. 12, 21, 46, § 102:

hypericon,

id. 12, 25, 54, § 119.—

II.

A city in Pieria, Liv. 29, 26.—

III.

A city in Thrace, Liv. 40, 22. —

IV.

A city in Umbria, called Petra Pertusa, now Il Furlo, Aur. Vict. Epist. in Vespas. 17.—

V.

A hill near Dyrrachium, Caes. B. C. 3, 42.

3.

Petra, ae, m., a Roman proper name, Tac. A. 11, 4.