longitudinal
gb/lˌɑnd͡ʒətˈudənəl/ us/lˌɑnd͡ʒətˈudənəl/
C1
Inglês
Aceções
0 aceções
adjective
technical
C1
property
1
observed repeatedly over time
A longitudinal study looks at the same people or things more than once over a period of time.
Padrão de uso:
longitudinal [study/research/data/survey/analysis]
Erro comum:
Do not use longitudinal just to mean “long.” In research, it means repeated observation over time, often of the same subjects.
Sinónimos
over-time (clearer and less technical, but less standard as an adjective)
|
follow-up (emphasizes later repeated checks or measurements)
|
panel (used especially for surveys that revisit the same participants)
Antónimos
cross-sectional (examines a population or sample at one point in time rather than repeatedly over time)
|
one-time (measured or done once instead of repeatedly)
Colocações
longitudinal study
|longitudinal research
|longitudinal data
|longitudinal survey
|longitudinal analysis
|longitudinal design
|longitudinal cohort
|longitudinal evidence
|longitudinal tracking
|longitudinal follow-up
Temas
research
|statistics
|education
|health
Exemplos
- The study uses a longitudinal design, interviewing the same families every two years.
- Longitudinal evidence suggests that sleep patterns in adolescence can affect health later in life.
- The team combined longitudinal data from three school districts.
Exemplos para aprendentes
- It was a longitudinal study of children over ten years.
- The researchers collected longitudinal data every spring.
adjective
technical
C1
property
2
running along the length
Something longitudinal goes from one end of something to the other, along its length.
Padrão de uso:
longitudinal [axis/section/crack/incision/direction]
Erro comum:
Do not confuse longitudinal with lateral or transverse; those usually describe a direction across or sideways.
Sinónimos
lengthwise (more everyday and easier to understand)
|
axial (more technical; refers to an axis or line through something)
Antónimos
transverse (running across something rather than along its length)
|
crosswise (more everyday; positioned across rather than lengthwise)
Colocações
longitudinal axis
|longitudinal section
|longitudinal direction
|longitudinal crack
|longitudinal incision
|longitudinal seam
|longitudinal fibers
|longitudinal muscle
|longitudinal rows
|longitudinal stripe
Temas
engineering
|anatomy
|design
|science
Exemplos
- The engineer inspected a longitudinal crack running down the pipe.
- The surgeon made a small longitudinal incision along the tendon.
- The fabric has longitudinal stripes running from top to bottom.
Exemplos para aprendentes
- The longitudinal line runs from one end to the other.
- They cut the carrot in a longitudinal direction.
adjective
technical
C1
relation
3
related to geographic longitude
Longitudinal information is connected with longitude, the east-west position of a place on a map.
Padrão de uso:
longitudinal [coordinate/line/variation/extent]
Erro comum:
Do not confuse longitudinal with latitudinal. Longitude is measured east or west; latitude is measured north or south.
Sinónimos
longitude-related (plain and explicit, but less formal)
|
meridional (more technical; relating to meridians, or lines of longitude)
Antónimos
latitudinal (relating to latitude rather than longitude)
Colocações
longitudinal coordinate
|longitudinal line
|longitudinal position
|longitudinal extent
|longitudinal range
|longitudinal variation
|longitudinal gradient
Temas
geography
|maps
|navigation
|climate
Exemplos
- The database records both latitudinal and longitudinal coordinates for each site.
- The map marks longitudinal lines at fifteen-degree intervals.
- The study found clear longitudinal variation in rainfall across the region.
Exemplos para aprendentes
- Longitudinal coordinates tell how far east or west a place is.
- The globe shows longitudinal lines from pole to pole.
Gramática
Forma de dicionário
longitudinal
IPA
GB/lˌɑnd͡ʒətˈudənəl/
US/lˌɑnd͡ʒətˈudənəl/
Sílabas e acento
lon - git - ud - in - al (5 sílabas)
Stress on 3rd syllable (ud)
Formas da palavra
Adjective
- Base: longitudinal
Expressões
longitudinal analysis
1/lˌɑnd͡ʒətˈudənəl ænˈælɪsɪs/
fixed phrase
technical
analysis of change over time
Longitudinal analysis studies how the same people or things change over time.
Exemplos
- Longitudinal analysis showed that symptoms decreased after the program.
- The report uses longitudinal analysis to compare employment outcomes before and after graduation.
- The researchers applied longitudinal analysis to monthly survey responses.
longitudinal axis
1/lˌɑnd͡ʒətˈudənəl ˈæksɪs/
fixed phrase
technical
lengthwise central line
The longitudinal axis is the main line that runs along the length of something.
Exemplos
- An airplane rolls around its longitudinal axis.
- The MRI image was aligned with the patient’s longitudinal axis.
- The cylinder is strongest when the load is applied along its longitudinal axis.
longitudinal data
1/lˌɑnd͡ʒətˈudənəl dˈætə/
fixed phrase
technical
repeated data over time
Longitudinal data is information collected from the same people or things more than once over time.
Exemplos
- The app collects longitudinal data on users’ sleep over several months.
- The researchers used longitudinal data to track changes in income.
- Longitudinal data from patients helped identify early warning signs.
longitudinal section
1/lˌɑnd͡ʒətˈudənəl sˈɛkʃən/
fixed phrase
technical
lengthwise cut or view
A longitudinal section shows something cut from one end to the other.
Exemplos
- The diagram shows a longitudinal section of the flower.
- They prepared a longitudinal section of the stem for the microscope.
- A longitudinal section of the bridge revealed corrosion inside the beam.
longitudinal study
1/lˌɑnd͡ʒətˈudənəl stˈʌdi/
fixed phrase
technical
study following subjects over time
A longitudinal study checks the same people or things again and again over time.
Exemplos
- The longitudinal study has followed 5,000 children since birth.
- Findings from a longitudinal study can show how habits change over time.
- She joined a longitudinal study on aging and memory.
longitudinal wave
1/lˌɑnd͡ʒətˈudənəl wˈeɪv/
fixed phrase
technical
wave vibrating parallel to travel
In a longitudinal wave, the material moves back and forth in the same direction the wave moves.
Exemplos
- Sound waves in air are longitudinal waves.
- In a slinky, a longitudinal wave moves as coils compress and spread out along the direction of travel.
- The class compared longitudinal waves with transverse waves.