[ˈkɒmplɛks], (Adjective)

Definitions:
- consisting of many different and connected parts
(e.g: a complex network of water channels)

- denoting or involving numbers or quantities containing both a real and an imaginary part

- denoting an ion or molecule in which one or more groups are linked to a metal atom by coordinate bonds
(e.g: in naming complex ions, the names of the ligands are cited first)


Phrases:

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

[ˈkɒmplɛks], (Noun)

Definitions:
- a group or system of different things that are linked in a close or complicated way; a network
(e.g: a complex of mountain roads)

- a related group of repressed or partly repressed emotionally significant ideas which cause psychic conflict leading to abnormal mental states or behaviour

- an ion or molecule in which one or more groups are linked to a metal atom by coordinate bonds
(e.g: two guanine bases can attach themselves to the same platinum atom, forming a stable complex)


Phrases:

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

[ˈkɒmplɛks], (Verb)

Definitions:
- make (an atom or compound) form a complex with another
(e.g: the DNA was complexed with the nuclear extract)


Phrases:

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