porphyrin

1. Any of various organic compounds containing four pyrrole rings, occurring universally in protoplasm, and functioning as a metal-binding cofactor in hemoglobin, chlorophyll, and certain enzymes.

2. Any of various compounds with a macrocyclic structure that consists essentially of four pyrrole rings joined by four =CH− groups.

3. One (as chlorophyll or hemoglobin) containing a central metal atom and usually exhibiting biological activity.

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Top Words by points	Points	Word Game
porphyrin	19	Scrabble

2 Letters	Scrabble® Points
in	2
oi	2
oh	5
on	2
op	4
or	2
oy	5
pi	4
po	4
no	2
hi	5
ho	5
yo	5

3 Letters	Scrabble® Points
pry	8
yon	6
yip	8
yin	6
rip	5
rin	3
rho	6
pop	7
phi	8
pro	5
pin	5
pip	7
pho	8
poh	8
poi	5
nor	3
hin	6
noh	6
nip	5
hip	8
hon	6
hop	8
ion	3
hoy	9
hyp	11

4 Letters	Scrabble® Points
pirn	6
porn	6
pony	9
prop	8
pyin	9
pyro	9
horn	7
ropy	9
yirr	7
yoni	7
pion	6
nori	4
noir	4
iron	4
inro	4
pipy	11
piny	9
phon	9
hypo	12

5 Letters	Scrabble® Points
hippy	15
nippy	12
orpin	7
irony	8
rhino	8
horny	11
hoppy	15
hippo	12
prior	7
prion	7
porny	10
porin	7
phony	13

6 Letters	Scrabble® Points
priory	11

9 Letters	Scrabble® Points
porphyrin	19