of or characterized by progress or progression
making use of or interested in new ideas, findings, or opportunities
relating to or denoting an educational theory marked by an emphasis on the individual, informality, and self-expression
moving forward continuously or in stages; advancing
said of a disease: increasing in extent or severity
said of a tax, charge, etc: increasing in rate as the base increases
relating to or denoting a verb aspect or tense that expresses action in progress, e.g. am working
said of a dance, card game, etc: involving successive changes of partner