browse words by letter
a b c d e f g h i j k l m n o p q r s t u v w x y z

lituus

lituus


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Lituus  \Lit"u*us\,  n.;  pl  {Litui}.  [L.] 
  1.  (Rom.  Antig.) 
  a  A  curved  staff  used  by  the  augurs  in  quartering  the 
  heavens. 
  b  An  instrument  of  martial  music;  a  kind  of  trumpet  of  a 
  somewhat  curved  form  and  shrill  note. 
 
  2.  (Math.)  A  spiral  whose  polar  equation  is  r^{2}[theta]  =  a; 
  that  is  a  curve  the  square  of  whose  radius  vector  varies 
  inversely  as  the  angle  which  the  radius  vector  makes  with 
  a  given  line