terbium terbium /ˈtɜːrbiəm/

noun

1. A metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite  ( atomic number 65 , Tb , terbium )
   a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite
   
   

 directory directory /daɪˈrɛktɝi, diːˈrɛktɝi, dɪˈrɛktɝi/

noun

1. () An alphabetical list of names and addresses  ( directory )
   an alphabetical list of names and addresses
    I looked up the company's address in the business directory.
   I looked up the company's address in the business directory.
   
   
2. (computer science) a listing of the files stored in memory (usually on a hard disk)  ( directory )
   (computer science) a listing of the files stored in memory (usually on a hard disk)
    I navigated through the directory to find the file I was looking for.
   I navigated through the directory to find the file I was looking for.
   
   

 behind behind /bɪˈhaɪnd/

adjective

1. () Having the lower score or lagging position in a contest  ( behind )
   having the lower score or lagging position in a contest
    Behind by two points
   behind by two points
    The 8th inning found the home team trailing
   the 8th inning found the home team trailing
   

adverb

1. () In, to or toward the rear  ( behind )
   in, to or toward the rear
    He followed behind
   he followed behind
    Seen from behind, the house is more imposing than it is from the front
   seen from behind, the house is more imposing than it is from the front
    The final runners were far behind
   the final runners were far behind
   
2. () Remaining in a place or condition that has been left or departed from  ( behind )
   remaining in a place or condition that has been left or departed from
    When he died he left much unfinished work behind
   when he died he left much unfinished work behind
    Left a large family behind
   left a large family behind
    The children left their books behind
   the children left their books behind
    He took off with a squeal of tires and left the other cars far behind
   he took off with a squeal of tires and left the other cars far behind
   
3. In debt  ( behind , behindhand , in arrears )
   in debt
    He fell behind with his mortgage payments
   he fell behind with his mortgage payments
    A month behind in the rent
   a month behind in the rent
    A company that has been run behindhand for years
   a company that has been run behindhand for years
    In arrears with their utility bills
   in arrears with their utility bills
   
4. In or into an inferior position  ( behind )
   in or into an inferior position
    Fell behind in his studies
   fell behind in his studies
    Their business was lagging behind in the competition for customers
   their business was lagging behind in the competition for customers
   
5. Of timepieces  ( behind , slow )
   of timepieces
    The clock is almost an hour slow
   the clock is almost an hour slow
    My watch is running behind
   my watch is running behind
   

noun

1. () The fleshy part of the human body that you sit on  ( arse [Canadian, British, Vulgar] , backside , bum [Informal, British] , buns [Informal, N. American] , butt [Informal, N. American] , can [Informal, N. American] , derriere , fanny [Informal, N. American, Vulgar] , fundament , hind end , hindquarters , keister [ N. American, Vulgar] , nates , posterior , prat [Vulgar] , rear [Informal] , rump , stern , tail end , tooshie [Informal] , tush [Informal, N. American] , ass [ N. American, Vulgar] , behind , bottom , buttocks , rear end [Informal] , seat , tail [Informal, N. American] , bahookie [Dialect, Informal, UK] , botty [Informal] , derrière , heinie [Informal, American] , jacksie [British, Vulgar] , jacksy [British, Vulgar] , keester [ N. American, Vulgar] , patootie [Informal, American] , tushy [Informal, N. American] )
   the fleshy part of the human body that you sit on
    He deserves a good kick in the butt
   he deserves a good kick in the butt
    Are you going to sit on your fanny and do nothing?
   are you going to sit on your fanny and do nothing?
   
   

preposition

1. () Positioned at the rear or back part of a structure.  ( behind )
   Positioned at the rear or back part of a structure.
   
2. () In support or endorsement of a cause or individual.  ( behind )
   In support or endorsement of a cause or individual.
   
3. () Occurring later in time or sequence.  ( after , behind , following )
   Occurring later in time or sequence.
   

 Huambo Huambo /wɑːmˈboʊ/

noun

1. A city in the mountains in western Angola  ( Huambo , Nova Lisboa )
   a city in the mountains in western Angola