Free Medical Terminology Practice Test: Plural Forms of Words

Learning medical terminology has its challenges, and for many people, learning how to make a singular word into a plural form can be quite challenging. Although many words follow the standard rule of simply adding an -s or -es, other words have plural forms that follow rather different rules; however, some of the more common exceptions are found below.

This chart gives examples of some rules for making plural forms of words in medical terminology:

Singular form ends in:	Plural form rule:
-a	Change the -a to -ae
-ax	Change the -ax to -aces
-is	Change the -is to -es
-ix, -ex, or -yx	Change the -ix, -ex, or -yx to ices
-ma	Change the -ma to -mata
-on	Change the -on to -a
-um	Change the -um to -a
-us	Change the -us to -i

The following practice test is designed to help readers to practice converting medical terminology singular words to plural words. Click on the first slide to enlarge and then click on the next thumbnail to scroll through the questions and answers.

You may also wish to see more of my resources, such as:

• Medical Terminology Flash Cards: Suffixes
• Medical Terminology Flash Cards: Directional Terms
• Medical Terminology Flash Cards: Color Prefixes and Combining Terms

I hope you find this practice test helpful and that you'll find more great study guides in my site map!

Medical Terminology Practice Test on Plural Word Forms

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Practice Test for Medical Terminology

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What is the plural form of bacterium?

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Plural form of bacterium is bacteria

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What is the plural form of thrombus?

Plural form of thrombus is thrombi

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What is the plural form of pediatrician?

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Plural form of pediatrician is pediatricians

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What is the plural form of diagnosis?

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Plural form of diagnosis is diagnoses

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What is the plural form of apex?

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Plural form of apex is apices

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What is the plural form of ventricle?

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Plural form of ventricle is ventricles

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What is the plural form of pleura?

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Plural form of pleura is pleurae

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What is the plural form of atrium?

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Plural form of atrium is atria

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What is the plural form of appendix?

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Plural form of appendix is appendices

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What is the plural form of fibroma?

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Plural form of fibroma is fibromata

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What is the plural form of coccus?

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Plural form of coccus is cocci

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What is the plural form of kidney?

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Plural form of kidney is kidneys

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What is the plural form of ganglion?

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Plural form of ganglion is ganglia

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What is the plural form of thorax?

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Plural form of thorax is thoaces

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What is the plural form of crisis?

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Plural form of crisis is crises

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Practice Medical Terminology Plural Words

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