par·tic·u·lar 
(pər-tĭkyə-lər, pə-tĭk-)
(pər-tĭkyə-lər, pə-tĭk-)adj.
1. Of, belonging to, or associated with a specific person, group, thing, or category; not general or universal: She did not have a particular café in mind for their get-together.
2. Distinctive among others of the same group, category, or nature; noteworthy or exceptional: an area known for its particular style of architecture.
3.
a. Of, relating to, or providing details; precise: gave a particular description of the incident.
b. Attentive to or concerned with details or niceties, often excessively so; fussy.
4. Logic Encompassing some but not all of the members of a class or group. Used of a proposition.
n.
Idiom: 1. An individual item, fact, or detail: The two schools are similar in every particular. The police refused to divulge the particulars of the case.
2. Logic A particular proposition.
in particular
Particularly; especially: The children enjoyed the zoo; in particular, they liked the monkeys.
[Middle English particuler, from Old French, from Late Latin particulāris, from Latin particula, diminutive of pars, part-, part; see PART.]