What are the words for "grandmother" in various languages?

Mostly courtesy of my dad the linguist, any errors due to my transcription:

Legend:

<'>   acute accent on following letter
<)>   hook under following letter
<->   macron on following letter
<.>   dot over following letter
<:>   dieresis on following letter
<`>   grave accent on following letter
<dh>  edh
<dot> dot under following letter
<u>   breve on following letter
<v>   hachek over following letter

Ainu                    huchi
Ainu                    shut
Arabic (Egyptian)       giddah
Arabic (Lebanese)       sitt
Avestan                 ny<->ak<->a
Bengali                 <dot>th<->akurma (father's mother)
Bengali                 didima (mother's mother)
Bengali                 matamohi (mother's mother)
Bengali                 pitamohi (father's mother)
Breton                  mammgoz
Burmese                 aphw<->a
Catalan                 <`>avia
Chinese                 c<'>um<u>u (father's mother)
Chinese                 w<`>aic<'>um<u>u
Church Slavonic         baba
Czech                   babi<u>cka
Danish                  bedstemor
Dutch                   grootmoeder
Farsi                   jaddah
Finnish                 iso<:>aiti
French                  a<:>ieule
French                  grand-m<`>ere
German                  Grossmutter
German                  Oma (familiar)
Gothic                  aw<->o
Greek (Homeric)         m<'>etr<`>os m<'><->eter (mother's mother)
Greek (Homeric)         patr<`>os m<'><->eter (father's mother)
Greek (classical)       ann<'>is (not found in my Liddell & Scott)
Greek (classical)       t<'><->eth<->e
Greek (later classical) m<'>amm<->e
Greek (modern)          giagia
Hausa                   k<`><->ak<->a
Hindi                   dadi (father's mother)
Hindi                   nani (mother's mother)
Hittite                 hannas
Hungarian               <:>oreganya
Hungarian               nagyanya
Irish                   seanmh<->athair
Italian                 nonna
Japanese                obaasama (formal)
Japanese                obaasan
Korean                  halm<u>oni
Korean                  halm<u>onim (formal)
Latin                   avia
Latvian                 vecmate
Lithuanian              bobut<.>e
Lithuanian              mo<v>ciut<.>e
Malay                   datok
Middle English          grandame
Middle English          grandmother
Middle High German      ane
Norwegian               bestemor
Old English             ealdm<->odor
Old High German         ana
Old Irish               senm<->athir
Old Norse               f<)>o<dh>urm<->o<dh>ir (father's mother)
Old Norse               m<->o<dh>urm<->o<dh>ir (mother's mother)
Polish                  babka
Portuguese              av<'>o
Punjabi                 dadi (father's mother)
Punjabi                 nani (mother's mother)
Rumanian                bunica
Rumanian                mam<u>a
Rumanian                mare
Russian                 babushka
Sanskrit                m<->at<->amah<->i (mother's mother)
Sanskrit                pit<->amah<->i (father's mother)
Serbo-Croatian          baba
Serbo-Croatian          baka
Singhalese              <->att<->a
Spanish                 abuela
Swedish                 farmor (father's mother)
Swedish                 mormor (mother's mother)
Tagalog                 nunong
Tagalog                 nunong babai
Tamil                   amm<->ayi
Tamil                   p<->a<dot>t<dot>ti
Turkish                 b<:>uy<:>ukanne
Ukrainian               babka
Urdu                    dadi (father's mother)
Urdu                    nani (mother's mother)
Welsh                   nain

[ Editor: "Portuguese", the second "Serbo-Croatian" and "Ukrainian"
were spelled "Portugese", "Serbo-Croation" and "Ukranian" in the
original. ]

-- J. J. Chew <jjchew@math.toronto.edu>

Here is a first set of responses; I expect some more tomorrow.
I sent this question out to my co-workers. Here are some of their responses,
with some duplications removed:

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Well in the UK we use:
Granny
Grandma
Nanna
Nan
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A Swedish naming convention for grandparents is as follows.

Farmor:        Father's mother
Mormor:        Mother's mother

Farfar: Father's father
Morfar: Mother's father [Editor: "Father's mother" in the original].

So you are interested in Farmor and Mormor.
------------------------------------------------------------
My mom is Grammy to my kids, and my grandmother is Nani to us.
------------------------------------------------------------
nana
babushka
mamaw
grande-mere
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These are not too exotic, but in case you don't have them already:

Nonna  (italian)
Abuela or abuelita  (spanish)

Also, I have no idea how to spell this, but I've heard it in
Arkansas/Texas:  mam-maw.
------------------------------------------------------------
        German: Oma

In my family:

        Me-Maw
        Oma-ma
        Grammy
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nenek (indonesian/malay)

I will try to get all the indonesian synonyms by tomorrow
------------------------------------------------------------
meme - french
babci - polish (i think i spelled it right- bop-chi)
abuela (i think this is right, spanish)
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My family is Lithuanian and we called my grandmother "Bobbie".
I think the Lithuanian name for grandmother is babuska (sp?)
but my older sister never could pronounce it. It always came out "Bobbie".
------------------------------------------------------------
The Hebrew word for grandmother is "savta".
------------------------------------------------------------
In our multi-cultural family we use:
Safta (Hebrew)
Nona (Arabic)
Bubbe (Yiddish)
------------------------------------------------------------

-- Mike Wolfberg <wolfberg@zoo.HQ.ileaf.com>

As promised, here are a few more answers:

----------------------------------------------------------
Dutch                Oma

Not sure if this is a slang term, but it's how one of my Dutch friends
refers to her grandmother.
[MSW comment - jjchew said this was German]
----------------------------------------------------------
My wonderful Grandmother's (nick) name:

        Grandma Katie Mum

and my Great G-ma:

        Nana Shelly
----------------------------------------------------------
Another Indonesian answer:

eyang putri
----------------------------------------------------------

-- Mike Wolfberg <wolfberg@zoo.HQ.ileaf.com>

What the heck, yet one more grandmother word won't hurt.  In German,
Mutti is an informal term for Mutter (mother).  At least one German
grandmother I know of was addressed as Grossmutti.

-- Jim Homan <homan@cygcyb.com>