• Access to a food supply that is sanitary and safe from terroristic threats

• USDA: "Access by all members at all times to enough food for an active, healthy life. Food security includes at a minimum
• the ready availability of nutritionally adequate and safe foods, and
• an assured ability to acquire acceptable foods in socially acceptable ways (that is, without resorting to emergency food supplies, scavenging, stealing or other coping strategies)."
• FAO: "All people, at all times, have access to sufficient, safe and nutritious food to meet their dietary needs and food preferences for an active and healthy life"
• Some prespectives explicitly highlight the need for culturally appropriate food, within the realm of meeting food preferences.
  
• Academy of Nutrition and Dietetics:
• Global food security addresses underlying causes of hunger through country-led initiatives & action by international institutions, with a focus on the sustainability of a healthy and safe food supply chain.
• National food security is concerned with the survival of the country by securing "national biodiversity, ecosystem preservation, agricultural sustainability, and biosecurity."
• Community food security means that all residents can "obtain a safe, culturally appropriate, nutritionally sound diet" in a (economically & environmentally) sustainable system that supports community self-reliance and social justice.
• Household food security means that all members members of the household have nutritionally adequate and
  safe food at all times, via socially acceptable ways.

• in a more abstract sense, as linked to food insecurity, limited healthy food access, and prevalence of overweight or obesity & its associated health problems
• See A Review of Community Food Security Literature, for example
  
• concretely, by using a cut off such as the federal poverty level
  

• Economic ability to purchase food
• Or more broadly, ability to produce, purchase, or receive food
• Spatial proximity to a food source
• Facility with which information can be viewed or used by the public
• Referring to handicapped accessibility to a location

"A food-security concept that includes availability or adequacy of supply of healthy food; accessibility or
the location of the food supply and the distance to that location (can refer to a community level or within
a household); affordability refers to food prices and people’s perception of worth relative to the cost;
acceptability or people’s attitudes about attributes of their local food environment and degree that local
food meets certain personally held standards; and accommodation or how well local food sources accept
and adapt to local residents’ needs, such as store hours and types of payments accepted."

• "Locales that lack access to stores or markets that sell food needed to maintain a healthy diet. These locations often have a surfeit of fast-food establishments" (Review of Community Food Security Literature)
  

• "Area in the United States with limited access to affordable and nutritious food, particularly such an area composed of predominantly lower income neighborhoods and communities" (The Northside Healthy Eating Project)

Within the tag family "Values, Justifications, & Motivations," in the "Food Justice" cluster.