Heavier-than-air design Synonyms

Heavier-than-air replaced

Definitions for Heavier-than-air


  • (adjective) relating to an aircraft heavier than the air it displaces

Synonyms for phrase

HD abbreviation

HD is an abbreviation for Heavier-than-air Design
What does HD stand for?
HD stands for "Heavier-than-air Design"

Design replaced

Definitions for Design


  • (noun) a method worked out in advance for achieving some objective
  • (noun) a secret plan for accomplishing evil or unlawful ends
  • (noun) something that one hopes or intends to accomplish