9 9 /naɪn/

adjective

1. () Denoting a quantity consisting of one more than eight and one less than ten  ( ix , 9 , nine )
   denoting a quantity consisting of one more than eight and one less than ten
     There were nine flowers in the vase.
   There were nine flowers in the vase.
   

noun

1. () The cardinal number that is the sum of eight and one  ( ennead , IX , Nina from Carolina , 9 , nine , niner )
   the cardinal number that is the sum of eight and one
    My little sister is nine years old
   My little sister is nine years old
   
   

 specimen specimen /ˈspɛsəmən/

noun

1. () An example regarded as typical of its class  ( specimen )
   an example regarded as typical of its class
   
2. () A bit of tissue, blood or urine that is taken for diagnostic purposes  ( specimen )
   a bit of tissue, blood or urine that is taken for diagnostic purposes
    They collected a urine specimen for urinalysis
   they collected a urine specimen for urinalysis
   
   

 conservation of mass conservation of mass /ˌkɒnsərˈveɪʃən əv mæs/

noun

1. A fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system  ( conservation of mass , conservation of matter , law of conservation of mass , law of conservation of matter )
   a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system
   
   

 margosa margosa /məˈrɡəsə/

noun

1. Large semi-evergreen tree of the East Indies; trunk exudes a tenacious gum; bitter bark used as a tonic; seeds yield an aromatic oil; sometimes placed in genus Melia  ( arishth , Azadirachta indica , margosa , Melia Azadirachta , neem , neem tree , nim tree )
   large semi-evergreen tree of the East Indies; trunk exudes a tenacious gum; bitter bark used as a tonic; seeds yield an aromatic oil; sometimes placed in genus Melia