Lanciform is an adjective used to describe an object that is shaped like a lance or a spear. Its synonyms include spear-shaped, lanceolate, pyramidal, acicular, and prismatic. Spear-shaped refers to the form of a spearhead, while lanceolate is used to describe leaves with a lance-shaped outline. Pyramidal describes a three-dimensional shape that is pointed at the top and widening towards the base. Acicular means needle-shaped, and prismatic refers to a geometric solid that is elongated in one direction. All of these words represent the same concept and can be used interchangeably with lanciform to describe something that is shaped like a spear or lance.