HB

Hard black (on lead pencils)

Hb

Haemoglobin

• filo-
• FILO
• Filofax
• filoplume
• filopodia
• filopodium
• filos
• filose
• filoselle
• filoselles
• filovirus
• fils
• filter
• filterabilities
• filterability
• filterable
• filterable virus
• filter bed
• filter beds
• filter cake
• filter coffee
• filter coffees
• filtered
• filter-feeder
• filter-feeders