(linguistics) The hypothesis that, for adult second language learners, acquiring grammatical properties and interfacing between them (for example, between syntax and semantics) should not be problematic, but that interfacing between these and an external component, such as pragmatics or discourse information, will prove to be very difficult.

Partial deafness

(creationism) The proposition that God created the universe within the past few thousands of years but also introduced false evidence that the universe is of great age.

The hypothesis that the evolution of life required an improbable combination of astrophysical and geological events and circumstances, and for this reason complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare.

The hypothesis that reality is in fact a simulation (such as a computer program) of which we, the simulants, are unaware.

plural of hypoacetylation

plural of hypoadiponectinemia

plural of hypothetical baptism

plural of hypothetical taxonomic unit

(biology) A hypothesis attempting to explain why most hosts of brood parasites care for the parasite's nestlings. Since the host's nest is attacked if the parasite's egg is detected and rejected, this indirectly enhances selective pressures favouring aggressive parasite behaviour that may result in positive feedback between mafia-like parasites and compliant hosts.