nounpl. pa·te·ras, also pa·te·rae
- A shallow bowl or dish, especially one used ceremonially by the ancient Romans in pouring libations.
- A shallow crater on the surface of a solar system body, having an irregular or scalloped rim, caused either by past volcanic activity or by the impact of a much smaller solar system body.
Origin of pateraLatin perhaps from patina shallow dish ( influenced by crātēra vessel for mixing wine with water ); see paten .
Apollinaris Patera on Mars