Infancy is the first stage of a life or a project. In its infancy, from infancy, died in infancy.
In its infancy is much the commonest use and is applied to technologies, industries and ideas. The Latin behind it means unable to speak, which is a precise description: an infant is a child before language rather than a child of any set age.
1nouninfancyThe first stage of a life or a project.
“The internet was still in its infancy when she started her first company.”
infancy is a stage.
Latin infantia means inability to speak — in, not, plus fari, to speak.
Latin
īnfantia — infancy, early childhood; childishness
Middle English
infancie
English, today
infancy
From Middle English infancie, from Latin īnfantia (“infancy, early childhood; childishness”), equivalent to infant + cy.
Etymology from Wiktionary, CC BY-SA