The phrase "a combination of progressive" is correct and usable in written English.
It can be used when discussing elements that are mixed or integrated, particularly in contexts related to ideas, policies, or movements that are forward-thinking or innovative.
Example: "The new policy is a combination of progressive ideas aimed at improving social equity and environmental sustainability."
Alternatives: "a blend of progressive" or "an amalgamation of progressive".
Cancers of the oral cavity arise through a combination of progressive genomic alteration and exposure to environmental carcinogens (Califano et al, 1996).
Diagnosis of each of the FTLD clinical syndromes relies mainly on the identification of a combination of progressive behavioural and neuropsychological impairments and the exclusion of others.
Lars Dolken (Cambridge University, UK) elaborated on the kinetics of RNA processing as inferred from a combination of progressive 4-thiouridine tagging and RNA-Seq.
Of the 16,000 deaf-blind persons in the United States, more than half are believed to have Usher syndrome (USH), a combination of progressive retinopathy and congenital hearing loss.
Type 2 diabetes is caused by a combination of progressive β-cell dysfunction, relative insulin deficiency, and variable degrees of insulin resistance that lead to dysregulation of glucose homeostasis.
The additional three affected individuals in this kindred showed a combination of progressive spinocerebellar ataxia, bulbar syndrome, extrapyramidal and pyramidal involvement, and intellectual deterioration (Table 1) [for additional clinical details and fludeoxyglucose-positron emission tomography findings see (7, 8)].
A combination of a progressive view of education and social change in the mid-1900's brought about the expansion of early education.
Experimental results showed that the deformation mode of CFRP tubes and aluminium sheet-wrapped CFRP tubes that were crushed by a flat platen or by a platen with blades was a combination of splaying progressive and transverse shearing failure mode.
However, experimental deformation modes of hollow and aluminium honeycomb-filled CFRP tubes with 50 mm length were found to be a combination of splaying progressive failure and transverse shearing failure.
The result was a weird combination of progressive homily and Romantic sentimentality.
Kilgore later adds: "[G]oing forward, the Obama campaign definitely needs to come to grips with the potential threat of an odd combination of progressive women, older voters of various ideological hues, and self-identified Democratic moderates and conservatives, who are at least open to the idea of defecting or taking a dive in November".
