Chapter 1

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Author:
dphill20
ID:
126975
Filename:
Chapter 1
Updated:
2012-01-25 13:34:01
Tags:
Rules word building Forming plurals nouns special endings
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Description:
Medical Terminology
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  1. Forming Plurals of Nouns with Special Engings

    If the singular ending is:

    is
    The plural ending is:

    es

    • Examples:
    • diagnosis, diagnoses
    • prognosis, prognoses
    • psychosis, psychoses

    *Some words ending in is form plurals by dropping the is and adding ides, as in epididymis and epididymides.
  2. Forming Plurals of Nouns with Special Engings

    If the singular ending is:

    um
    The plural ending is:

    a

    • Examples:
    • atrium, atria
    • ileum, ilea
    • septum, septa
    • bacterium, bacteria
  3. Forming Plurals of Nouns with Special Engings

    If the singular ending is:

    us
    The plural ending is:

    • i
    • Examples:
    • alveolus, alveoli
    • bacillus, bacilli
    • bronchus, bronchi

    *Some singular forms ending in us form plurals by dropping the us and adding either era or ora, as in viscera and corpora. Others form plurals by simply adding es, as in viruses.
  4. Forming Plurals of Nouns with Special Engings

    If the singular ending is:

    a
    The plural ending is:

    • ae
    • Examples:
    • vertebra, vertebrae
    • patella, patellae
    • petechia, petechiae
  5. Forming Plurals of Nouns with Special Engings

    If the singular ending is:

    ix
    The plural ending is:

    • ices
    • Examples:
    • appendix, appendices
    • varix, varices
    • cervix, cervices

    *Through common use, appendixes and cervixes have become acceptable plural forms.
  6. Forming Plurals of Nouns with Special Engings

    If the singular ending is:

    ex
    The plural ending is:

    • ices
    • Examples:
    • cortex, cortices
  7. Forming Plurals of Nouns with Special Engings

    If the singular ending is:

    ax
    The plural ending is:

    • aces
    • Examples:
    • thorax, thoraces (thoraxes also acceptable)
  8. Forming Plurals of Nouns with Special Engings

    If the singular ending is:

    ma
    The plural ending is:

    • s (or mata)
    • Examples:
    • carcinoma, carinomas (or carcinomata)
    • sarcoma, sarcomas (or sarcomata)
  9. Forming Plurals of Nouns with Special Engings

    If the singular ending is:

    on
    The plural ending is:

    • a
    • Examples:
    • protozoon, protozoa
    • spermatozoon, spermatozoa

    *Some singular forms ending in on form plurals by adding s, as in chorion and chorions.
  10. Forming Plurals of Nouns with Special Engings

    If the singular ending is:

    nx
    The plural ending is:

    • nges
    • Examples:
    • phalanx, phalanges
    • larynx, larynges
  11. Prefixes and other word parts.
    Most prefixes require no change when they are joined with other word parts.
  12. Combining forms and suffixes.
    The combining vowel is usually retained when a combining form is joined with a suffix that begins with a consonant.

    The combining vowel is usually omitted when a combining form is joined with a suffix that begins with a vowel.
  13. Combining forms.
    The combining vowel is usually retained between combining forms.
  14. Eponym
    Eponyms are names for diseases, organs, procedures, or body functions that are derived from the name of a person.
  15. Acronym
    Acronyms are words formed from the initial letters of a compound term.

    CABG, pronounced like the vegetable, stands for coronary artery bypass graft.

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