rima
 oxford
 views  updated May 08 2018rima On 
Mars, a rille or cleft, e.g. Rima Bradley, Rima Sirsalis.
  A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY
   rima
 oxford
 views  updated May 23 2018rima (ry-mă) n. (in anatomy) a cleft. 
r. glottidis the space between the vocal folds.
  A Dictionary of Nursing