2
bioengineering(noun, study, science, determination, field)
2
bioinformatics(noun, study, science, determination, field)
2
biomathematics(noun, study, science, determination, field)
2
biomedical research(noun, expression, study, science, determination)
2
biotechnology(noun, study, science, determination, field)
2
botany(noun, study, science, determination, field)
2
building biology(noun, expression, study, science, determination)
2
cartography(noun, study, treatment, science, knowledge)
2
cell biology(noun, expression, study, science, determination)
2
cetology(noun, study, science, aspect, phenomenon)
2
chemical biology(noun, expression, study, treatment, science)
2
chemical engineering(noun, expression, study, treatment, science)
2
chemical oceanography(noun, expression, study, treatment, science)
2
chemical thermodynamics(noun, expression, study, treatment, science)
2
chemo-informatics(noun, form, study, science, field)
2
cladistics(noun, study, science, determination, field)
2
classical mechanics(noun, expression, form, study, science)
2
climatology(noun, study, treatment, science, knowledge)
2
coastal geography(noun, expression, study, treatment, science)
2
coleopterology(noun, study, science, aspect, phenomenon)
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APASmart Define. (2015). natural science thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/natural_science/thesaurus/narrower
ChicagoSmart Define. 2015. "natural science thesaurus" https://smartdefine.org/natural_science/thesaurus/narrower (accessed September 27, 2026).
HarvardSmart Define 2015, natural science thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/natural_science/thesaurus/narrower>.
MLASmart Define. "natural science thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/natural_science/thesaurus/narrower>