237 entries under study topic. ×

3
parasitology(noun, treatment, science, knowledge)
3
pharmacology(noun, form, science, determination)
3
physical science(noun, expression, form, science)
2
coloured pigment(noun, expression, form, nature)
2
chronobiology(noun, science, determination, field)
2
acarology(noun, science, determination, field)
2
acoustics(noun, form, science, field)
2
aerobiology(noun, science, determination, field)
2
agriculture(noun, science, determination, field)
2
aqueous geochemistry(noun, expression, form, science)
2
arachnology(noun, science, determination, field)
2
astrobiology(noun, science, determination, field)
2
astrodynamics(noun, form, science, field)
2
astrometry(noun, form, science, field)
2
astronomy(noun, form, science, field)
2
astrophysics(noun, form, science, field)
2
atmospheric physics(noun, expression, form, science)
2
atmospheric science(noun, expression, form, science)
2
atomic physics(noun, expression, form, science)
2
bacteriology(noun, expression, science, determination)
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APASmart Define. (2015). natural science thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/natural_science/thesaurus/narrower
ChicagoSmart Define. 2015. "natural science thesaurus" https://smartdefine.org/natural_science/thesaurus/narrower (accessed September 25, 2026).
HarvardSmart Define 2015, natural science thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/natural_science/thesaurus/narrower>.
MLASmart Define. "natural science thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/natural_science/thesaurus/narrower>