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
bi‧o‧tech‧nol‧o‧gy /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
bi‧o‧chem‧is‧try /ˌbaɪəʊˈkeməstri $ ˌbaɪoʊ-/ noun [uncountable]
the scientific study of the
chemistry of living things
nanobots
nanoparticles
megastructuctures
meg‧a‧bit /ˈmeɡəbɪt/ noun [countable]
technical a million bits
megabyte
microchip
microparticle
microscope
semidetached
sem‧i‧cir‧cle /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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