a compound described in terms of the central atom to which other atoms are bound or coordinated
difficult to analyze or understand
a conceptual whole made up of complicated and related parts
a whole structure (as a building) made up of interconnected or related structures
complicated in structure; consisting of interconnected parts
(psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior
making great mental demands; hard to comprehend or solve or believe
highly complex or intricate and occasionally devious
tangled in knots or snarls
used of old persons or old trees; covered with knobs or knots