1. adjective /pəˈtɪk.jə.lə(ɹ),pɜɹˈtɪkjəlɜɹ/
I couldnt find the particular model you asked for, but I hope this one will do.
b) Specialised; characteristic of a specific person or thing.
We knew it was named after John Smith, but nobody knows which particular John Smith.
See Also: particulars
2. noun /pəˈtɪk.jə.lə(ɹ),pɜɹˈtɪkjəlɜɹ/
A particular thing.
See Also: universal, for ones particular
Wikipedia foundation.