converging lens converging lens /kənˈvɜrdʒɪŋ lɛnz/

noun

1. Lens such that a beam of light passing through it is brought to a point or focus  ( converging lens , convex lens )
   lens such that a beam of light passing through it is brought to a point or focus
   
   

 genus Anopheles genus Anopheles /ˈdʒiːnəs əˈnɒfɪliːz/

noun

1. Malaria mosquitoes; distinguished by the adult's head-downward stance and absence of breathing tubes in the larvae  ( Anopheles , genus Anopheles )
   malaria mosquitoes; distinguished by the adult's head-downward stance and absence of breathing tubes in the larvae
   
   

 Abu Ali al-Husain ibn Abdallah ibn Sina Abu Ali al-Husain ibn Abdallah ibn Sina /ˈɑːbuː ˈæli ˈæl-hʊˈseɪn ɪbn ˌæbˈdælə ɪbn ˈsiːnə/

noun

1. Persian physician and influential Islamic philosopher; his interpretation of Aristotle influenced St. Thomas Aquinas; writings on medicine were important for almost 500 years (980-1037)  ( Abu Ali al-Husain ibn Abdallah ibn Sina , Avicenna , ibn-Sina )
   Persian physician and influential Islamic philosopher; his interpretation of Aristotle influenced St. Thomas Aquinas; writings on medicine were important for almost 500 years (980-1037)
   
   

 override override /ˈoʊvɝˌraɪd/

noun

1. The act of nullifying; making null and void; counteracting or overriding the effect or force of something  ( nullification , override )
   the act of nullifying; making null and void; counteracting or overriding the effect or force of something
   
2. A manually operated device to correct the operation of an automatic device  ( override )
   a manually operated device to correct the operation of an automatic device
    When the automatic system failed, the engineer had to use the override to regain control.
   When the automatic system failed, the engineer had to use the override to regain control.
   
   

verb

1. () Rule against  ( overrule , overthrow , overturn , override , reverse )
   rule against
    The Republicans were overruled when the House voted on the bill
   The Republicans were overruled when the House voted on the bill
   
2. (riding) ride (a horse) too hard  ( override )
   (riding) ride (a horse) too hard
   
3. Counteract the normal operation of (an automatic gear shift in a vehicle)  ( override )
   counteract the normal operation of (an automatic gear shift in a vehicle)
   
4. Prevail over  ( override )
   prevail over
    Health considerations override financial concerns
   health considerations override financial concerns