plānitiēs

1. Æquum (from εἴκελος) denotes that which is flat, a horizontal flatness, in opposition to that which rises or sinks, to superior, inferior, and acclivis. Cic. Fam. iii. 8. Orat. iii. 6. Tac. Agr. 35. Hist. iv. 23; planum (from πλάξ) denotes ‘evenness,’ in opp. to unevenness, to montosus, saxosus. Cic. Part. 10. Quintil. v. 10, 37. 21. Hence, figuratively, æquum denotes ‘justice,’ as injustice may be considered as beginning when one part is raised above another; in the same way planum denotes clearness and distinctness, where nothing rises to interrupt the view. 2. Æquor and planities denote a flat surface with regard to its form; campus, with regard to its position, as low-lands in opp. to high-lands. (iv. 71.)