"Symbology" may at least serve as a shorthand symbol standing for the "science of symbolism" as coined by the celebrated authors (1923).
"Symbology" may well be worth a synonym to:
Saussure's "semiology,"
Welby's "signifies," and
Peirce's "semiotics" in vogue.
Neither "symbology" nor "symbolism" is in vogue in the sense Ogden and Richards would prefer.
"Symbology" or "science of symbolism" may be defined as symbol to stand for the special paradigm Ogden and Richards have founded to influence studies on the influence of symbols upon thoughts.