‘Dreamtime’ or ‘Dreaming’ has never been a direct translation of an Aboriginal word. The English language does not know an equivalent to express the complex Aboriginal spiritual concepts to white people.
Aboriginal languages contain a lot of words for spirituality and beliefs, such as
- tjurkurrpa, jukurrpa, tjurgurba (Pitjantjatjara people, north-western South Australia),
- altjeringa, alcheringa, alchera, aldjerinya (Arrernte people, central Australia),
- ungud (Ngarinyin people, north-Western Australia),
- wongar (north eastern Arnhem Land),
- bugari (Broome, north-Western Australia).
There is no spelling orthodoxy because native speakers did not write down Aboriginal languages.
'The Dreaming' or 'the Dreamtime' indicates a psychic state in which or during which contact is made with the ancestral spirits, or the Law, or that special period of the beginning.—Mudrooroo, Aboriginal writer 
Aboriginal spirituality does not consider the ‘Dreamtime’ as a time past, in fact not as a time at all. Time refers to past, present and future but the ‘Dreamtime’ is none of these. The ‘Dreamtime’ “is there with them, it is not a long way away. The Dreamtime is the environment that the Aboriginal lived in, and it still exists today, all around us” . It is important to note that the Dreaming always also comprises the significance of place .
Hence, if we try to use an English word, we should avoid the term ‘Dreamtime’ and use the word ‘Dreaming’ instead. It expresses better the timeless concept of moving from ‘dream’ to reality which in itself is an act of creation and the basis of many Aboriginal creation myths. None of the hundreds of Aboriginal languages contain a word for time .
We are the oldest and the strongest people, we're here all of the time, we're constant through the Dreaming which is happening now, there's no such thing as the Dreamtime.—Karl Telfer, senior culture-bearer for Kaurna people, Adelaide 
Note that the Dreaming is not the product of human dreams. The use of the English word ‘dreaming’ is more of a matter of analogy than translation .
The Dreaming also explains the creation process. Ancestor beings rose and roamed the initially barren land, fought and loved, and created the land’s features as we see them today. After creating the ‘sacred world’ the spiritual beings “turned into rocks or trees or a part of the landscape. These became sacred places, to be seen only by initiated men.” 
The spirits of the ancestor beings are passed on to their descendants, e.g. shark, kangaroo, honey ant, snake and so on and hundreds of others which have become totems within the diverse Indigenous groups across the continent .
It is interesting to note that many Aboriginal people also use the term ‘Dreaming’ to refer to their concepts about spirituality. This might be because some of them find ceremonies or songs in a state of dreaming, a state between sleeping and waking . Strictly speaking, dreaming and mythology can be considered as the same thing: the deep mental archetypes and images of wisdom which we take on to be guided by them when the conscious mind is in a state of quietness .
The fact that the Dreaming is still around Aboriginal people is a fundamental difference to other spiritual beliefs. In Christianity, for example, the spiritual world is ‘heaven’, and many Christians believe it is reachable only after death and never while the person is still alive. (Those who find heaven inside might disagree, but such a discussion is beyond this article.)
What we draw on from our memories, and think, imagine and create in our daily lives is our dreaming.—Djon Mundine, Bundjalung man and Aboriginal Curator, Campbelltown Arts Centre 
Each Aboriginal person identifies with a specific Dreaming. It gives them identity, dictates how they express their spirituality (see below) and tells them which other Aboriginal people are related to them in a close family, because those share the same Dreaming . One person can have multiple Dreamings .
Each form shares the spirituality from the ‘Dreaming’. It is during ceremonies that the trance-like dreaming state seizes the Aboriginal people and they connect with the ancestral beings .
My culture is my identity. Dreamtime stories tell the life of my people. Growing older. Hearing stories of my ancestors living off the land Becoming one with the creatures Even though I haven't met them I feel this unbreakable connection Through the stories I have heard. The stories that have been passed down through generations. These stories are living through us. Without our culture we have no identity And without our identity We have nothing.
Poem by students Kiarra and Karri Moseley and Luke Bidner . Read more Aboriginal poetry.