bloom1
v.
- produce flowers; be in flower.
- be or become very healthy.
- technical coat (a lens) with a special surface layer to reduce reflection.
n.
- a flower, especially one cultivated for its beauty.
▸the state or period of blooming:
the apple trees were in bloom.
- a youthful or healthy glow in a person's complexion.
- a delicate powdery surface deposit on fruits, leaves, or stems.
- a full, bright sound in a musical recording.
- a rapid growth of microscopic algae or cyanobacteria in water resulting in a coloured scum on the surface.
Etymology
ME: from ON blóm ‘flower, blossom’, blómi ‘prosperity’, blómar ‘flowers’.
bloom2
n.
a mass of iron or steel hammered or rolled into a thick bar for further working.
▸historical an unworked mass of puddled iron.
v.
[
usu. as noun blooming]
make (metal) into such a mass.
Etymology
OE blōma, of unknown origin.