释义 |
pre·sump·tive \-(p)tiv, -tēv also -təv\ adjective Etymology: Medieval Latin praesumptivus, from Late Latin, presumptuous, from Latin praesumptus (past participle of praesumere to anticipate, suppose, take in advance) + -ivus -ive 1. a. : giving grounds for reasonable opinion or belief < presumptive evidence > < an extremely strong presumptive case is made out — J.A.Hobson > b. : based on probability or presumption < the presumptive heir > 2. [probably from Late Latin praesumptivus] archaic : presumptuous 3. : based on inference : apparent, presumed < the presumptive visit cannot be established as certain > 4. embryology a. : expected to develop in a particular direction under normal conditions < presumptive region of the blastula > b. : being the embryonic precursor of < presumptive neural tissue > |