combination of factors contributing to the stress or decline of a tree.
Merriam-Webster Online Dictionary
complex (noun)1.
a whole made up of or interrelated parts - complicated a complex of welfare programs the military-industrial complex
2.
a) a group of culture traits relating to a single activity (as hunting), process (as use of flint), or culture unit
b) (1) a group of repressed desires and memories that exerts a dominating influence upon the personality
(2) an exaggerated reaction to or preoccupation with a subject or situation
c) a group of obviously related units of which the degree and nature of the relationship is imperfectly known
d) the sum of factors (as symptoms) characterizing a disease or condition
3.
a chemical association of two or more species (as ions or molecules) joined usually by weak electrostatic bonds rather than covalent bonds
4.
a building or group of buildings housing related units - an apartment complex a sports complex
1.
a) of two or more parts - composed composite
b) (1) of a word having a bound form as one or more of its immediate constituents - unmanly is a complex word
(2) of a sentence consisting of a main clause and one or more subordinate clauses
2.
hard to separate, analyze, or solve
3.
of, concerned with, being, or containing complex numbers - a complex root complex analysis
transitive verb
1.
to make complex or into a complex
2.
- chelate
complex (Wikipedia)