associate professor associate professor /əˈsoʊʃiːət prəˈfɛsər/

noun

1. () [ N. American] A teacher lower in rank than a full professor but higher than an assistant professor  ( senior lecturer [British] , associate professor [ N. American] )
   a teacher lower in rank than a full professor but higher than an assistant professor
    Dr. Smith, an associate professor at the university, was known for her innovative research.
   Dr. Smith, an associate professor at the university, was known for her innovative research.
   
   

 Potamogeton nodosus Potamogeton nodosus /ˌpoʊtəmoʊˈdʒiːtɒn noʊˈdoʊsəs/

noun

1. Pondweed with floating leaves; of northern United States and Europe  ( loddon pondweed , Potamogeton americanus , Potamogeton nodosus )
   pondweed with floating leaves; of northern United States and Europe
   
   

 submersible submersible /səbˈmɝːsɪbəl/

adjective

1. Capable of being immersed in water or functioning while submerged  ( submergible , submersible )
   capable of being immersed in water or functioning while submerged
    A submersible pump
   a submersible pump
    A submergible electric frying pan
   a submergible electric frying pan
   

noun

1. A warship designed to operate under water  ( submersible , submersible warship )
   a warship designed to operate under water
   
   
2. An apparatus intended for use under water  ( submersible )
   an apparatus intended for use under water
   

 Ku Klux Klan Ku Klux Klan /ˈkuː ˈklʌks ˈklæn/

noun

1. () A secret society of white Southerners in the United States; was formed in the 19th century to resist the emancipation of slaves; used terrorist tactics to suppress Black people  ( KKK , Klan , Ku Klux Klan )
   a secret society of white Southerners in the United States; was formed in the 19th century to resist the emancipation of slaves; used terrorist tactics to suppress Black people