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Medical Dictionary?

Home Demo forums Patient Message Board Medical Dictionary?

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    Does anyone know of a good online medical dictionary? I want to look up some words from my diagnosis: dyserythropoiesis, megaloblastoid changes, kerryorhexis, dysplasia, granulocytoc, megakaryocytic. Thanks. ANd, sorry for all the dissention on the forum. We all react to grief differently, and it is obvious you all cared very much for John. I am so sad when I read all your posts. Sincerely, J.Claire


    There is an online dictionary in both of the insurance plans under with I am covered but they only allow access to members. Sometimes I just use the search engines like: or but I have also used the search sections at both of these sites:
    The last one I used to see if the symptoms I had could have been from another cause and have been misdiagnosed.

    It will be interesting to see what others provide as good online dictionaries.


    Below is another one that has cancer terms and definitions I have found to be a good one.



    A nurse friend of mine recommended MerckSource to me. She said The Merck Manual is one that a lot of the nurses rely on for definitions and explanations of various conditions, and MerckSource is sort of like the online version. Here’s the link:

    You can enter the term you want to look up into the search bar at the top of the page. It will give you definitions for your search term as well as articles related to it.

    I’ve also had good luck with the NIH site that Jim listed.



    By the way, I couldn’t find kerryorhexis spelled that way, but I did find it spelled karryorhexis and karyorrhexis. Maybe there are alternate spellings, and you might have more luck finding a definition with one of these other spellings.


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