The suffix -gram denotes which of the following meanings?

• A. tumor
• B. record, writing
• C. enlargement
• D. study of

Answer: (B)

Knowing that the ending -gram denotes a record or tracing produced by an instrument helps you pick the right meaning. In medical terms, words like electrocardiogram, radiogram, and sonogram all refer to a written image or recording of something measured or observed. That makes the meaning “record, writing” the best fit. Other endings have different meanings: -oma means tumor, -megaly means enlargement, and -logy means study of.