com·plex

/ˌkämˈpleks,kəmˈpleks,ˈkämˌpleks/
adjective: complex

1. consisting of many different and connected parts.
   • ot easy to analyze or understand; complicated or intricate.
2. Mathematics
   denoting or involving numbers or quantities containing both a real and an imaginary part.
3. Chemistry
   denoting an ion or molecule in which one or more groups are linked to a metal atom by coordinate bonds.

noun: complex
plural noun: complexes
/ˈkämpleks/

1. a group of similar buildings or facilities on the same site.
   • a group or system of different things that are linked in a close or complicated way; a network.
2. Psychoanalysis
   a related group of emotionally significant ideas that are completely or partly repressed and that cause psychic conflict leading to abnormal mental states or behavior.
   • informal
     a disproportionate concern or anxiety about something.
3. Chemistry
   an ion or molecule in which one or more groups are linked to a metal atom by coordinate bonds.

• any loosely bonded species formed by the association of two molecules.

verb Chemistry
verb: complex
3rd person present: complexes
past tense: complexed
past participle: complexed
gerund or present participle: complexing
/ˈkämpleks/

make (an atom or compound) form a complex with another.

Origin

mid 17th century (in the sense ‘group of related elements’): from Latin complexus, past participle (used as a noun) of complectere ‘embrace, comprise’, later associated with complexus ‘plaited’; the adjective is partly via French complexe.

#complex