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logic
noun
-
logic
a
particular
line
of
reasoning
explaining
why
someone
thinks
or
acts
in
a
certain
way
•
I
can't
follow
the
logic
of
their
decision
to
close
the
store
early
.
I
can't
follow
the
logic
of
their
decision
to
close
the
store
early
.
•
His
logic
was
simple
:
spend
less
and
save
more
.
His
logic
was
simple
:
spend
less
and
save
more
.
noun
-
logic
the
academic
study
of
the
principles
of
valid
reasoning
and
sound
argument
•
At
university
,
Maria
decided
to
major
in
logic
because
she
loved
puzzles
and
clear
thinking
.
At
university
,
Maria
decided
to
major
in
logic
because
she
loved
puzzles
and
clear
thinking
.
•
The
professor
filled
the
blackboard
with
symbols
while
explaining
formal
logic
.
The
professor
filled
the
blackboard
with
symbols
while
explaining
formal
logic
.
from
Old
French
logique
,
from
Latin
logica
,
from
Ancient
Greek
logikē
(
art
of
reasoning
)
noun
-
logic
the
set
of
rules
or
operations
that
control
how
a
computer
program
or
electronic
circuit
behaves
•
The
engineer
tested
the
circuit's
logic
with
an
oscilloscope
.
The
engineer
tested
the
circuit's
logic
with
an
oscilloscope
.
•
Good
programmers
write
clear
logic
to
avoid
bugs
.
Good
programmers
write
clear
logic
to
avoid
bugs
.
psychological
adjective
relating
to
the
mind
,
thoughts
,
or
feelings
rather
than
the
body
•
After
the
car
accident
,
Maria
needed
psychological
help
to
overcome
her
fear
of
driving
.
After
the
car
accident
,
Maria
needed
psychological
help
to
overcome
her
fear
of
driving
.
•
Long
periods
of
isolation
can
cause
serious
psychological
effects
on
astronauts
aboard
the
space
station
.
Long
periods
of
isolation
can
cause
serious
psychological
effects
on
astronauts
aboard
the
space
station
.
From
psychology
+
-ical
,
first
used
in
the
mid-19th
century
when
psychology
emerged
as
a
scientific
field
.
adjective
planned
to
influence
a
person
’
s
thoughts
or
feelings
,
especially
to
gain
an
advantage
•
The
army
used
loud
music
as
a
psychological
tactic
to
keep
the
enemy
awake
at
night
.
The
army
used
loud
music
as
a
psychological
tactic
to
keep
the
enemy
awake
at
night
.
•
Mark
played
a
clever
psychological
trick
by
staring
silently
at
his
chess
rival
to
make
him
nervous
.
Mark
played
a
clever
psychological
trick
by
staring
silently
at
his
chess
rival
to
make
him
nervous
.
Extension
of
the
basic
sense
,
first
recorded
in
military
writings
during
World
War
II
when
strategies
to
affect
enemy
morale
became
formalized
.
biological
adjective
connected
with
living
things
and
how
they
work
•
In
science
class
,
we
studied
the
biological
functions
of
the
human
heart
.
In
science
class
,
we
studied
the
biological
functions
of
the
human
heart
.
•
Scientists
discovered
a
new
biological
pathway
that
controls
sleep
.
Scientists
discovered
a
new
biological
pathway
that
controls
sleep
.
From
biology
+
-ical
,
first
recorded
in
the
early
19th
century
.
adjective
related
by
blood
rather
than
by
adoption
or
marriage
•
After
years
of
searching
,
she
finally
met
her
biological
mother
.
After
years
of
searching
,
she
finally
met
her
biological
mother
.
•
He
has
two
sisters
,
one
adopted
and
one
biological
.
He
has
two
sisters
,
one
adopted
and
one
biological
.
Extension
of
the
scientific
sense
to
blood
relations
in
the
mid-20th
century
.
noun
a
person
’
s
biological
parent
•
At
the
reunion
,
he
was
nervous
about
meeting
his
biological
for
the
first
time
.
At
the
reunion
,
he
was
nervous
about
meeting
his
biological
for
the
first
time
.
•
The
adoptee
wrote
a
letter
to
her
biological
asking
for
a
meeting
.
The
adoptee
wrote
a
letter
to
her
biological
asking
for
a
meeting
.
Noun
use
developed
from
the
adjective
in
late
20th-century
North
American
adoption
communities
.
ideology
noun
-
ideology
,
ideologies
a
system
of
ideas
and
beliefs
that
guides
the
aims
and
actions
of
a
person
,
group
,
or
movement
•
The
revolutionary
group
adopted
a
new
ideology
centered
on
equality
and
freedom
.
The
revolutionary
group
adopted
a
new
ideology
centered
on
equality
and
freedom
.
•
Environmental
protection
is
at
the
heart
of
the
party
’
s
ideology
.
Environmental
protection
is
at
the
heart
of
the
party
’
s
ideology
.
early
19th-century
coinage
from
French
idéologie
,
originally
meaning
the
‘
science
of
ideas
’,
from
Greek
idea
‘
form
,
pattern
’
+
–logy
‘
study
’.
noun
-
ideology
,
ideologies
the
general
way
of
thinking
and
set
of
values
typical
of
a
society
,
culture
,
or
historical
period
•
The
dominant
ideology
of
the
1950s
emphasized
traditional
family
roles
.
The
dominant
ideology
of
the
1950s
emphasized
traditional
family
roles
.
•
Modern
business
ideology
often
values
innovation
over
stability
.
Modern
business
ideology
often
values
innovation
over
stability
.
Same
origin
as
Sense
1
:
from
French
idéologie
, ‘
science
of
ideas
’.
Over
time
it
came
to
mean
the
ideas
themselves
.