xxiii xxiii /ˈɛks ˈɛks ˈaɪ aɪ aɪ/

adjective

1. Being three more than twenty  ( xxiii , twenty-three , 23 )
   being three more than twenty
   

 XXIII

noun

1. The cardinal number that is the sum of twenty-two and one  ( XXIII , 23 , twenty-three )
   the cardinal number that is the sum of twenty-two and one
   
   

 optical aberration optical aberration /ˈɒptɪkəl ˌæbəˈreɪʃən/

noun

1. An optical phenomenon resulting from the failure of a lens or mirror to produce a good image  ( aberration , optical aberration , distortion )
   an optical phenomenon resulting from the failure of a lens or mirror to produce a good image
   
   

 sense of right and wrong sense of right and wrong /ˈsɛns ʌv raɪt ænd rɔːŋ/

noun

1. Motivation deriving logically from ethical or moral principles that govern a person's thoughts and actions  ( moral sense , scruples , sense of right and wrong , conscience )
   motivation deriving logically from ethical or moral principles that govern a person's thoughts and actions
     His conscience urged him to make the right decision, even when it was difficult.
   His conscience urged him to make the right decision, even when it was difficult.
   
   

 homeroom homeroom /ˈhoʊmruːm/

noun

1. A classroom in which all students in a particular grade (or in a division of a grade) meet at certain times under the supervision of a teacher who takes attendance and does other administrative business  ( home room , homeroom )
   a classroom in which all students in a particular grade (or in a division of a grade) meet at certain times under the supervision of a teacher who takes attendance and does other administrative business