Monday, December 04, 2017

NA2 4/12/17

p.34

bio- /baɪəʊ, baɪə $ baɪoʊ, baɪə/ prefix
relating to or using living things
 bio-genetics
 biophysics

nano- /nænəʊ $ -oʊ/ prefix [in nouns] 
one billionth part of a unit
 nanometre (=a billionth of a metre)

x to the second power
y to the third power
y to the nth power

semi- /semi/ prefix 
1 exactly half
 a semicircle
2 partly but not completely
 in the semi-darkness
 semi-literate people
3 happening, appearing etc twice in a particular period
 a semi-weekly visit
 a semi-annual publication

ultra- /ʌltrə/ prefix  1 extremely an ultra-modern building He remained ultra-cautious. an ultra-light jacket

biotechnology /ˌbaɪəʊtekˈnɒlədʒi $ ˌbaɪoʊtekˈnɑː-/ ●○○ (also biotech /ˈbaɪəʊtek $ ˈbaɪoʊ-/ informal) noun [uncountable] 
the use of living things such as cells, bacteria etc to make drugs, destroy waste matter etc
 the biotech industries

biochemistry /ˌbaɪəʊˈkeməstri $ ˌbaɪoʊ-/ noun [uncountable] 
the scientific study of the chemistry of living things

nanobots
nanoparticles
megastructuctures
megabit /ˈmeɡəbɪt/ noun [countable] 
technical a million bits
megabyte
microchip
microparticle
microscope
semidetached
semicircle /ˈsemiˌsɜːkəl $ -ɜːr-/ noun [countable] 
half a circle
in a semicircle
 About 50 children sat in a semicircle around me.
Ultraviolet
Ultrasounds

U.N., UN /ˌjuː ˈen/ noun 
→ the UN


complete/utter/absolute etc chaos There was total chaos on the roads.

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