| pilin | 1. General term for the protein subunit of pilus. 2. Protein subunit (7.2 kD) of f pili, sex pili coded for by the F plasmid. (18 Nov 1997) |
|---|---|
| piling unmerchantable material | (PUM) A logging contract requirement to remove and pile unmerchantable woody material of a specified size. (05 Dec 1998) |