Množina: conjectures

1. Interpretation of omens; supposition
2. Inference from defective or presumptive evidence; a conclusion deduced by surmise or guesswork; a proposition (as in mathematics) before it has been proved or disproved

To arrive at by conjecture; to infer on slight evidence; to surmise; to guess; to form, at random, opinions concerning.

Množina: conjecturers

Singular of conjectures is conjecture.