度盛り is read as どもり (domori) and means gradation.
どもり
domori
こくさいおんどめもり
International Temperature Scale
おんどめもり
temperature scale
どがいし
disregarding
さかり
(being in) heat
めもり
gradations (on a ruler, thermometer, etc.)
おおもり
large serving
もりあがり
bulge
はたらきざかり
prime of one's working life
はなざかり
booming or peaking (in popularity)
まっさかり
height of
きりもり
cut and fill (e.g. earthwork)
おてもり
making arbitrary decisions which benefit oneself