The definition of Minimalistic taken fron the dictionary is: “Minimal and minimize come from the Latin adjective minimus, “least, smallest,” and people therefore useminimal to refer to the smallest possible amount”
Acording to Wikipedia, minimalism is when the work is stripped down to its most fundamental feature.
Many artists and amateurs have tried to define Minimalism, but since it is a philosophical topic, we still haven’t agreed at one single definition.
Minimal as less elements
Merche Suárez Louzao says: “The art of appreciating the essential”
She describes the art of minimalism like that: When the number of recognizable and perceivable elements in a picture is minimal
Minimal as few destinctive colors
Color helps to recognize different objects. A picture with a few objects with strong colors can be considered minimal.
Minimal as in small objects
This is the art of seeing beauty in the small sthings. Many artists consider photography of small pictures (also known as Micro photography) as Minimalism.
Minimalism as simple geometry
Pictures with few simple geometrical curves and lines can also be minimalist. They are easy to perceive.
Minimalism as parts of a whole
Sometimes an object or scene is too big and complicated. But images that focus on parts of it can be quite minimalistic.
Minimalism as repeating shapes
When a picture is mostly comprised of repeated objects or patterns, it can be considered minimalist too.
Minimalism as in low detail
When a picture has less detail, it can usually be considered as minimalistic.
Pictures with a high level of details cannot be considered Minimalism.
And here you have an interestng aticle that kan be usefull if you decide to go on with minimalistic photography. It’s A 10 Step Guide to Superb Minimalist Photography.