lex med p.81 arenati...

http://lila-erc.eu/data/lexicalResources/NLW/id/attestation/31578 <http://www.w3.org/nl/lemon/frac#Attestation>

lex med p.81 arenati... 
lex med p.81 arenatio est species balnei sicci, cum aeger pedibus arenae calidae insidet: ut in hydrope fit. G: Sandbad. 

data from the linked data cloud