al-Qayyûm   63                       

        The Self-Subsisting,  The Self-Existing One upon Whom all others depend

The Ever-Living, Self-Existing One who is the foundation upon which all things exist.

This name is used in the Qur'ân. For example, see 2:255

Abu Hurairah reported that whenever the Prophet, peace be upon him, was faced with a serious difficulty, he would raise his head to the sky and supplicate, "Subhan-Allah al-'Azim (glory be to Allah, the Mighty)." And when he implored seriously and strongly,
he would say "Ya Hayyu, Ya Qayyum" (O Ever-Living One, O Self-Existing One)." 
  (hadith of Tirmidhi)

The word mustaqîm, from this same q-w-m root, means straight, righteous, upright, rising upwards or ascending.

(Also written as al-qayyum, al-qayyoom, the Self-Existing: ya qayyum, ya qayyoom)

The One whose nature it is to exist. The One who is free of any dependence on anything else for existence.

The One through whom all things arise. The One by whom all things are eternally managed aright.

The attributes of al-Hayy and al-Qayyûm are often used to together, with al-Hayy signifying the attribute of ever-lasting life, and al-Qayyûm signifying the attribute of self-existing life. Thus, the attributes of al-Hayy and al-Qayyûm express two aspects of the One Life.

From the root q-w-m which has the following classical Arabic connotations:

to stand up, to rise up, to ascend, become high
to begin, to start, to come to pass
to arise, to set out
to be on-going, to exist
to be founded, to be built on
to undertake, to carry out, to manage
to make aright, straighten out, accurate, exact
to make righteous, upright