á-mang
This might be just a supplemental entry adding to an entry in the Main Volume.
In the OE text, the length is:indicated by acute accentsindicated by macronsnot indicated.
á-mang
AddSe ðe his calic ágeóte ámang his mæssan (inter missam suam ), Ll. Th. ii. 218, 17. Gelamp hit ámang þám (meanwhile ), Hml. S. 23, 136. Ámang þissan, Chr. 1066; P. 197, 32.
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A Combined List of Abbreviations.

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A Combined List of Abbreviations.