Wiktionary
macrophilia
n. (context paraphilia English) A paraphilia involving sexual attraction to giants.
Wikipedia
Macrophilia
Macrophilia is a fascination with or a sexual fantasy involving giants, more commonly expressed as giantesses (female giants). Typically, it is a male fantasy, with the male playing the "smaller" part--entering, being dominated, or being eaten by the larger being. Others involve partners who naturally have a significant difference in size.